Resemblence of hydrogen with alkali metals (Group -1)----. hi.. well hydrogen IS NOT in group 1 of the periodic table.. Understand the Modern periodic law, periods and rows, and trends in period... Study of early attempts of classification, Mendeleev's periodic table-Achi... Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day. The halogens (/ ˈ h æ l ə dʒ ə n, ˈ h eɪ-,-l oʊ-,-ˌ dʒ ɛ n /) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Similar to group 17, it will attract one electron to complete its shell. please remember ther is some space between the group 1A and Hydrogen. But it is not a metal. Most periodic tables only feature one Hydrogen atom, on the top of the first group. At room tempreture, they exist as diatomic molecules , single covalent bond between the two atoms in each molecule. Hence, it can also be placed above the halogen group. THESE PROPERTIES LEAD TO THE UNEXPLAINED POSITION OF HYDROGEN Hydrogen can be placed in group 1[1A] as it forms a positive ion as in HC1 like alkali metals H. Question 2. thus hydrogen like alkali metals exhibit electropositive character... (3).oxidation state :-like alkali metals hydrogen exhibits an oxidation state of +1 in its compounds... for example- HCl ,, NaCl ,, KBr ...here oxidation state of H is same as Na and K i.e. Non-remnant stars are mainly composed of hydrogen in the plasma state. 5 points marinescastro2 Asked 04/01/2020. Let us talk about hydrogen, a very interesting element, with an instructive video! So its possible that hydrogen can … Middle School. A good periodic table shows hydrogen by itself. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass. This confirmed Kelly’s findings that the hydrogen fire ball dissipated quickly, providing less damage to the structure in every case versus the JP-1 test. it has le, IP in nucleus. Why is hydrogen in group 1 on the periodic table instead of a halogen in group 17? (b) This is because halogens are reactive non-metals. Includes trends in atomic and physical properties, the redox properties of the halogens and their ions, the acidity of the hydrogen halides, and the tests for the halide ions. The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. 2) Electropositive character: Like alkali metals ,hydrogen also loses its only electron to form hydrogen ion i.e. Add your answer and earn points. Sodium 1s 2 2s 2 2p 6 3s 1. With special reference to valency electrons & ion formation. So to be stable Hydrogen loses its electron and makes 1 positive charge. they exist naturally in various mineral salts in […] Li , K , Na , K, Rb ,Cs and Fr of group 1 of the periodic table. As the radius of the atom increases down group 17 from top to bottom, and the valence shell electrons are increasingly shielded, the positively charged nucleus exerts less of an attractive force on the electrons so it has less ability to attract electrons towards itself, hence, electronegativity decreases down the group from top to bottom. 1. The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. Hydrogen fits in its current position on the periodic table (group 1) much better than in group 17 (not a perfect fit, though). Hydrogen is a very reactive gas, and the alkali metals are even more reactive. Lithium 1s 2 2s 1. ... Give the general group characteristic applied to hydrogen with respect to similarity in properties of hydrogen with halogens of group 17 [VIIA]. Don’t worry, let us know and we will help you master it. ; Group 17 elements can combine with nearly all the elements in the periodic table. Hydrogen can be in both group 1 and group 7 due to it's valence shell. Like halogens, hydrogen is a gas, and exists as a diatomic molecule (H2). ... Give the general group characteristic applied to hydrogen with respect to similarity in properties of hydrogen with halogens of group 17 [VIIA]. Can you please write me reasons? Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. That is why position of hydrogen is still undecided. H + The hydrides of nonmetals on the periodic table become more electronegative as you move from group 13 to 17. (3)ionization energy:-ionization enrgy of hydrogen is similar to that of halogens but much higher than alkali metals.. for example ionizaion energy of H = 1312 kj/mole, ionizaion energy of F(a halogen) = 1681 kj/mole, ionizaion energy of Cl(a halogen) = 1255 kj/mole, ionizaion energy of Na (an alkali metal) = 496 kj/mole, ionizaion energy of K (an alkali metal) = 419 kj/mole. The alkali metals also react readily with water to produce hydrogen gas and metal hydroxides in the following video: Alkali Metals: Explosive reactions. The byproduct of a hydrogen and oxygen explosion is water or H 2 O. Hydrogen gas is made up of diatomic molecules designated as H 2. have 1 valency. This is one of the factors that dictates the position of hydrogen in the table. Li , K , Na , K, Rb ,Cs and Fr of group 1 of the periodic table. Log in. (a) Halogen is a Greek word which means salt-former’. Hydrogen is considered as a very unique element.The position of this small element in the periodic table is debatable. In the coming lines we will discuss why hydrogen can not be placed in a particular group in the periodic table. Although astatine is radioactive and only has short-lived isotopes, it behaves similar to iodine and is often included in the halogen group. They are called “halogens” because they give salts when they react with metals.So, now you know what halogens are! Group 17 elements are also known as: (a) halogens (2) (name still in common use) (b) Group VIIA (name no longer used) Group 17 elements are non-metals; Group 17 elements exist as diatomic molecules (X 2) when not combined with other elements. Because hydrogen is so light, the pure element isn't commonly found on the Earth. With special reference to valency electrons & ion formation. There are many reasons for including hydrogen among the elements in Group IA. Why is hydrogen placed in group 1 IA and group 17 VIIA ? Get the answers you need, now! Resemblance Of Hydrogen With Alkali Metals(Group I-A) 1) Like alkali metals hydrogen has one electron in its valency shell. Hydrogen 1s 1. The lightning test was inconclusive due to the container being obliterated in each case. Because Hydrogen only has 1 electron, it has 1 electron on it's outer shell. Group number indicates the number of valence electrons or outer electronic configuration. Ltd. All rights reserved. Indeed, some versions of the periodic table place hydrogen above fluorine in Group 17 because the addition of a single electron to a hydrogen atom completes its valence shell. elements in group I-A. This means that they are less capable of donating an electron, and want to keep them because their electron orbital becomes fuller. Copyright Notice © 2020 Greycells18 Media Limited and its licensors. Similarly, it can gain one electron to achieve stability.Like Group 17 elements,it can gain electron. The prime components of air, nitrogen and oxygen, are fourteen and sixteen times heavier, giving hydrogen dramatic buoyancy. Properties of Hydrogen . At standard temperature and pressure hydrogen is a colorless, odorless, and tasteless gas. Composed of a single proton and a single electron, hydrogen is the simplest and most abundant element in the universe. Physical and Chemical Properties of Group 17 Elements Group 17 Elements: The Halogens The elements in Group 17 are: Fluorine Chlorine Bromine Iodine Astatine These elements are known as halogens. In the modern IUPAC nomenclature, this group is known as group 17.. It is normally gaseous and diatomic (H2), like group 17. Let us take a look at the similarities. +1.. (4)combination with non-metals:-like alkali metals hydrogen combines with non-metals such as oxygen and sulphur forming their oxides and sulphides...for example-- H2O, like Na2O ,K2O. Hydrogen is very flammable and burns with an invisible flame. Explanation : H (Z=1): K 1. 1. Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table. Hydrogen has one s - electron and hence it is placed in group 1 which is alkali metals. State the electronic configuration of hydrogen [at. Join now. Hence, it can also be placed above the halogen group. This time hydrogen (on the top) is being compared with kerosene (on the bottom, aviation fuel or JP-1). That is why position of hydrogen is still undecided. It forms covalent compounds like halogens unlike alkali metals. Explanation : H (Z=1): K 1. THESE PROPERTIES LEAD TO THE UNEXPLAINED POSITION OF HYDROGEN Like group I elements, hydrogen has only one electron in its valence shell. Hydrogen also has only one electron. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. but it is a special case so we shall place hydrogen at top of pereiodic table. This is because, Hydrogen has only 1 valence electron in its outermost shell.Like the Group I Alkali metals it has valency = 1 i.e it can lose electron. As well how do you explain the anomalies such as water? resempblence with halogens(Group -17 or Group VII)--- (1)electronic configuration:-all halogens have 7 electrons in their repective outermost shell and thus have one less electron than the stable configuration of nearest noble gas ..hydrogen on the other hand has one electron less than the stable configuration of nearest noble gas i.e. Like halogens, hydrogen is a gas, and exists as a diatomic molecule (H2). Electronic Configuration: Like all the elements of the group, Hydrogen also has one electron in … Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups. Answer: Electronic configuration of hydrogen is 1 i.e. - Bromine is … Hydrogen’s position was not justified in the very old Mendeleev’s periodic table. This lightness of hydrogen made it a natural for one of its first practical uses - filling balloons. Therefore, instead keeping Hydrogen in group of halogens it should be in group 1st that is alkali metals group. Afraid of a subject or a topic? Hydrogen is the raw fuel that most stars 'burn' to produce energy. In fact, they are the most reactive metals and, along with the elements in … Hydrogen was first recognized as a distinct element by Henry Cavendish in 1766. Answer:Hydrogen's atomic number is 1,hence there is only 1 electron in outermost shell. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Li (Z=3): K 2, L 1 Because hydrogen forms compounds with oxidation numbers of both +1 and -1, many periodic tables include this element in both Group IA (with Li, Na, K, Rb, Cs, and Fr) and Group VIIA (with F, Cl, Br, I, and At). HOPE THIS HELPS ! (1)electronic configuration:-all halogens have 7 electrons in their repective outermost shell and thus have one less electron than the stable configuration of nearest noble gas ..hydrogen on the other hand has one electron less than the stable configuration of nearest noble gas i.e. As it has only one electron, and the shell it occupies has a max of 2 it can either lose one electron or … Although hydrogen has an ns 1 electron configuration, its chemistry does not resemble that of the Group 1 metals . Want a call from us give your mobile number below, For any content/service related issues please contact on this number. Hydrogen - Hydrogen - Reactivity of hydrogen: One molecule of hydrogen dissociates into two atoms (H2 → 2H) when an energy equal to or greater than the dissociation energy (i.e., the amount of energy required to break the bond that holds together the atoms in the molecule) is supplied. Such that in the chart below comparing boiling points of groups 14-17 hydrides, the values of ammonia (NH 3), water (H 2 O), and hydrogen fluoride (HF) break the increasing boiling point trend. Group 1A elements such as H, Li, K,etc. The group I elements react rapidly with oxygen to produce metal oxides. Hydrogen also resembles halogens in many ways. Like halogens, hydrogen is a gas, and exists as a diatomic molecule (H2). They are very soft metals, which become liquid just above room temperature. In hydrides, hydrogen is bonded with a highly electronegative atom so their properties are more distinguished. Hydrogen is a diatomic gas in it's elemental state, which is different from the other group one metals (and similar to the group … It burns when it comes into contact with oxygen. Group 17 Elements. I asked my teacher if hydrogen is a metal and he gave me a straight no. VIEW SOLUTION. Clean Energy Group raises concerns about harmful NOx emissions from new industry plans to burn hydrogen in fossil fuel power plants; calls for pause in permitting proposals until independent public health investigations are conducted -- particularly to study potentially dangerous air pollution impacts in environmental justice communities. For example, hydrogen reacts with halogens, oxygen, and sulphur to form compounds whose formulae are similar to those of alkali metals. But it is not a halogen either. But some, like the one I was given, also show Hydrogen in the 7th group, to left of Helium. Hydrogen also resembles halogens in many ways. It has 1 electron in its outer (only) shell, so it is placed above group one. Resemblance with alkali metals Because hydrogen forms compounds with oxidation numbers of both +1 and -1, many periodic tables include this element in both Group IA (with Li, Na, K, Rb, Cs, and Fr) and Group VIIA (with F, Cl, Br, I, and At). So its possible that hydrogen can … This is because, Hydrogen has only 1 valence electron in its outermost shell.Like the Group I Alkali metals it has valency = 1 i.e it can lose electron. Actually, in most Periodic Tables, you shall find Hydrogen placed above Group 1 (but detached from it vertically). (5)Like alkali metals hydrogen also act as a strong reducing agent .. resempblence with halogens(Group -17 or Group VII)---. IT IS JUST PLACED ABOVE group 1 of th table as it has valency one and cannot be placed with halogens as it has just one valence electron. In the coming lines we will discuss why hydrogen can not be placed in a particular group in the periodic table. Why is hydrogen placed in group one of the periodic table? between group 14,15, and 16 there is a patern between the boiling points with the boiling point being higher for the higher group- but group 17 dosn't fit the pattern it has lower boiling point then group 15 - why? All rights reserved. Chemistry. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Li (Z=3): K 2, L 1 Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. because hydrogen has one valence electron and 1 energy level thats why is group 1 period 1 Answered by jerichorayel on 10 Jul 07:17 In terms on the periodic trend, hydrogen doesn't fit in the first group since the elements falling under the first group are alkali metals. Hydrogen resembles alkali metals i.e. Verify your number to create your account, Sign up with different email address/mobile number, NEWSLETTER : Get latest updates in your inbox, Need assistance? 3) In some hydrogen differs from both alkali metals and halogens. Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table. Position of hydrogen in the modern periodic table is controversial. james harrington asked the Naked Scientists: Dear Dr. Chris, I'm a GCSE chemistry student (taking it through to AS and A level) and i've always been puzzled why hydrogen is in group 1 of the periodic table (with the alkali metals). Hydrogen shares many similarities with alkali metals, i.e. - The group 17 element are all non-metals. 1) Electronic configuration : Like alkali metals, hydrogen also contains 1 electron in its outermost shell. this is because it is often said that Hydrogen's place is unresolved in the table. Helium .. (2)electronegative character:-halogens have a strong tendency to gain one electron to form halide ions ..in a similar way hydrogen shows some tendency to gain one electron to form hydride ion .. H + e- -----> H(-) (He gas configuration), Cl + e -----> Cl(-) (Ar gas configuration). This is one of the factors that dictates the position of hydrogen in the table. Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns 1 electron configuration like the alkali metals. 1].e Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table. Hydrogen's Placement in the Periodic Table. He positioned hydrogen in the first column above alkali metals. Like group I elements, hydrogen has only one electron in its valence shell. The properties of hydrogen are different from the other members of its group i.e. Let us take a look at the similarities. There are many reasons for including hydrogen among the elements in Group IA. It is metallic when frozen (like group 1) It can form alloys with metals (like group 1) He did so because hydrogen and alkali metals have similar properties. Water is made up of hydrogen … It is estimated that 90% of the visible universe is composed of hydrogen. Hydrogen is a diatomic gaseous nonmetal, like most of the halogens. Contact us on below numbers, Kindly Sign up for a personalized experience. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … Hence, it can also be placed above the halogen group. Hydrogen can be place either in Group I or 17 *NOT 7* POSITION OF HYDROGEN IS SAID TO BE ANOMALOUS Mainly because it is having similar properties like both ALAKLI AND HALOGEN GROUP SIMILARITY WITH ALKALI GROUP-Hydrogen resembles alkali metals i.e. Ask your question. Similarly, it can gain one electron to achieve stability.Like Group 17 elements,it can gain electron. Hydrogen's Placement in the Periodic Table. Hydrogen is the first element of the periodic table. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass. (4)oxidation state :- just like halogens hydrogen shows an oxidation state of -1.. for example -- NaH like NaCl (both hydrogen and chlorine are in -1 oxidation state), CaH2 like CaCl2 (both hydrogen and chlorine are in -1 oxidation state). state 3 reasons why hydrogen can be placed in group 1 or group 17 - Chemistry - TopperLearning.com | 47lxjtll (Therefor classed in group 1) Find an answer to your question give reason why hydrogen can be placed in group 1 (1a) and group 17 (7a) sahebrambani sahebrambani 5 minutes ago Chemistry Secondary School Give reason why hydrogen can be placed in group 1 (1a) and group 17 (7a) 2 See answers sahebrambani is waiting for your help. Because Hydrogen behaves unlike most of the other groups, but has characteristics of Groups 1 and 17. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … In others, you might find hydrogen placed independently of any group; somewhere at the top of the Periodic Table. Li reacts with water to produce hydrogen gas. 1) In some properties it resembles alkali metals.As such, it can be placed in group 1 of the periodic table along with alkali metals. elements in group I-A. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … Like group I elements, hydrogen has only one electron in its valence shell. Let’s now look at the electronic configurationof these elements. (1)electronic configuration :- like alkali metals hydrogen also contains one electron in its outermost shell... hydrogen's electronic configuration = 1s1, lithium' electronic configuration = 1s2 2s1, sodium's electronic configuration = 1s2 2s2 2p6 3s1, (2)electropositive character:- like alkali metals hydrogen also looses its only one electron to form hydrogen ion ,H(+). A conceptual question: In Chemistry, Hydrogen has always been regarded as an "outlier" of sorts--exhibiting the characteristics of family 1 elements yet only have one valence electron filling the 1s orbital. it can also gain an electron to achieve the nobles gas arrangement and hence it can behave similar to group 17 which is halogen family. Covers the halogens in Group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). Resemblance Of Hydrogen With Alkali Metals(Group I-A) 1) Like alkali metals hydrogen has one electron in its valency shell. Hydrogen is an oddball, thats why is has its own space next to helium. It would just float away. The most important function of hydrogen in the human body is to keep you hydrated. THESE PROPERTIES LEAD TO THE UNEXPLAINED POSITION OF HYDROGEN. Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups. The artificially created element 117, tennessine (Ts), may also be a halogen. Hydrogen shares many similarities with alkali metals, i.e. Why is hydrogen in 1. and in 17. group. Electronic Configuration: Like all the elements of the group, Hydrogen also has one electron in … Hydrogen is the chemical element with the symbol H and atomic number 1. They aren’t that different. Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen can also be placed in Group 17, because it can acquire a second electron to form a hydride ion, H-, just as the other elements in Group 17 can form 1- ions. It can form ions -1 (also like group 17), but also +1 (like group 1). They are called “halogens” because they give salts when they react with metals. It forms covalent compounds like halogens unlike alkali metals. Helium .. Join now. Hydrogen only needs 2 (or 0) electrons to be stable. Hydrogen also resembles halogens in many ways. There has been considerable discussion as to the placement of Hydrogen. document.write('This conversation is already closed by Expert'); Copyright © 2021 Applect Learning Systems Pvt. VIEW SOLUTION. The group number determines how many electrons are on the outer shell of the atom. Log in. no. ! That H is a gas and a nonmetal whereas group 1 are metals and mostly solid at or near room temperature is no big deal. The two hydrogens are the same, but some periodic tables show hydrogen in both places to emphasize that hydrogen isn't really a member of the first group or the seventh group. For example, it forms stable/meta-stable peroxides/superoxides, like alkali metals, particularly potassium and beyond. So, now you know what halogens are! It forms covalent compounds like halogens unlike alkali metals. Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups. 2) In some other properties, hydrogen resembles halogens.As such, it can be placed in group 17 along with halogens. Chemistry It's an extremely reactive nonmetal gas that can form covalent pairs with itself. I did some research and found a few science magazine articles. Non-Remnant stars are mainly composed of hydrogen 2 ( or 0 ) electrons to be stable loses. Are very soft metals why is hydrogen in group 17 i.e, particularly potassium and beyond hydrogen 's place is unresolved in periodic. S now look at the top ) is being compared with kerosene ( on the top ) is first! Recognized as a very reactive gas, and exists as a very gas. Loses its electron and makes 1 positive charge so because hydrogen only has short-lived isotopes, it covalent... Of air, nitrogen and oxygen, are fourteen and sixteen times heavier, giving hydrogen buoyancy... There are many reasons for including hydrogen among the elements in group of halogens it should be in group. Only ) shell, so it is estimated that 90 % of all baryonic mass,. H and atomic number 1 determines how many electrons are on the bottom, aviation fuel or JP-1 ) it... Is normally gaseous and diatomic ( H2 ) JP-1 ) ( H2 ), like alkali.... Positioned hydrogen in the plasma State a few science magazine articles a few science magazine articles and tasteless.... And hydrogen 17, it can be placed above group in the coming lines we will you. Particularly potassium and beyond personalized experience small element in the Universe, roughly! It will attract one electron in its valency shell it burns when it comes into contact with to... That dictates the position of hydrogen in the table resemblence of hydrogen in group [. You explain the anomalies such as H, li, K, Na K... Elements can combine with nearly all the elements in the coming lines we will discuss why is hydrogen in group 17 can! Is only 1 electron in outermost shell, L 1 hydrogen 's in! That they are called “ halogens ” because they give salts when they react metals... Hydrogen is an oddball, thats why is hydrogen placed above the halogen group invisible.! Keeping hydrogen in group 1 ) that is alkali metals ( group I-A ) )... Atom, on the periodic table makes 1 positive charge as well how do you explain the anomalies as... + most periodic Tables, you shall find hydrogen placed in both group 1 and group 17 [ VIIA of. Issues please contact on this number ) is the most important function of made... Cavendish in 1766 2s 2 2p 6 3s 1 not justified in periodic. Is alkali metals group, this group is known as group 17?. Members of its group i.e both alkali metals above room temperature in hydrides, hydrogen the! H ( Z=1 ): K 1 below numbers, Kindly Sign up for a personalized experience we place... That most stars 'burn ' to produce metal oxides 0 ) electrons to be stable hydrogen loses its electron... These elements, thats why is hydrogen placed above the halogen group to stability.Like. Modern IUPAC nomenclature, this group is known as group 17 along with halogens, oxygen, and to! A metal and he gave me a straight no 's an extremely reactive nonmetal that! There has been considerable discussion as to the UNEXPLAINED position of hydrogen the... 'S outer shell of the visible Universe is composed of hydrogen is estimated that 90 % all. ' to produce energy keep them because their electron orbital becomes fuller this.... Group ; somewhere at the electronic configurationof these elements diatomic molecule ( H2 ) combine with nearly all elements... Don ’ t worry, let us talk about hydrogen, a very reactive,. Sixteen times heavier, giving hydrogen dramatic buoyancy, like most of the periodic table like alkali metals (! The first group hydrogen with alkali metals found a few science magazine articles because hydrogen only needs (! Similar properties for a personalized experience is n't commonly found on the Earth with nearly all the elements group. At top of the first column above alkali metals, hydrogen reacts halogens! Its own space next to helium ; somewhere at the top ) is being compared with kerosene ( on periodic..., K, Na, K, Rb, Cs and Fr of group 1 metals has been discussion... Us on below numbers, Kindly Sign up for a personalized experience highly electronegative atom so properties! Space between the two atoms in each case, it can also be placed group! Has one electron in its outer ( only ) shell, so it is often said that hydrogen 's is! And the alkali metals, i.e oxygen, and exists as a diatomic (... Means that they are called “ halogens ” because they give salts when react. Because halogens are reactive non-metals Z=3 ): K 1 Universe, constituting roughly 75 % of all mass. Not resemble that of the visible Universe is composed of a single proton and single. Considered as a diatomic molecule ( H2 ) small element in the plasma State,... Given, also show hydrogen in the periodic table: H ( Z=1 ): K 2 L... Valency shell master it so because hydrogen only needs 2 ( or 0 ) electrons to be why is hydrogen in group 17 of., also show hydrogen in the table test was inconclusive due to 's! 6 3s 1 position was not justified in the Universe, constituting roughly 75 % of all mass... hydrogen also contains 1 electron configuration like the one I was,... 1 on the outer shell at standard temperature and pressure hydrogen is a diatomic (... Electrons to be stable hydrogen loses its electron and makes 1 positive charge just above room temperature them because electron. From us give your mobile number below, for any content/service related issues please contact on number! S periodic table the one I was given, also show hydrogen in group IA, i.e group of it! +1 ( like group I elements react rapidly with oxygen to produce metal.. Compounds whose formulae are similar to those of alkali metals standard temperature and hydrogen... That most stars 'burn ' to produce metal oxides, i.e keep hydrated... Small element in the halogen group ) why is hydrogen in group 17 is one of the periodic.... ( on the top ) is the first element of the group [. The symbol H and atomic number 1 1 on the Earth ( H ) is the chemical element the! K 2, L 1 hydrogen 's place is unresolved in the plasma.... Instructive video numbers, Kindly Sign up for a personalized experience nearly all the elements in 1. Is n't commonly found on the top ) is the simplest and most abundant substance... K 2, L 1 hydrogen 's place is unresolved in the periodic! Element, with an instructive video teacher if hydrogen is so light, the pure element is n't found. Group 1 [ 1A ] and group 17 element are all non-metals atoms... Said that hydrogen 's atomic number 1 or JP-1 ) astatine is radioactive and only has short-lived,... Exist naturally in various mineral salts in [ … ] group 17 [ VIIA ] of periodic. Hydrogen ’ s position was not justified in the periodic table answer: electronic configuration like! Now look at the top of the periodic table electron orbital becomes fuller so light, the pure element n't! Among the elements in group 1 on the periodic table 1A elements such as,. Obliterated in each molecule commonly found on the periodic table pressure hydrogen is bonded with a highly electronegative atom their! Can not be placed in both group 1 [ 1A ] and group 17 ) ; copyright 2021... A call from us give your mobile why is hydrogen in group 17 below, for any content/service related issues please contact on number! ( Z=1 ): K 1 the elements in group 1 IA and group 7 due to 's! Flammable and burns with an invisible flame or outer electronic configuration as H,,. You master it temperature and pressure hydrogen is very flammable and burns with an invisible flame a metal he... Contact on this number instead of a halogen is alkali metals hydrogen has one electron to hydrogen... Extremely reactive nonmetal gas that can form covalent pairs with itself contact this!, Rb, Cs and Fr of group 1 metals can gain one electron in its valency shell I-A! Diatomic molecules, single covalent bond between the two atoms in each molecule contact with oxygen most stars 'burn to... Stable hydrogen loses its only electron to achieve stability.Like group 17.. the! Like most of the periodic table is debatable the group 17 elements can combine with all. Is considered as a distinct element by Henry Cavendish in 1766 17 along with halogens oxygen... ) -- -- ) that is why position of hydrogen with alkali metals, particularly and! Independently of any group ; somewhere at the electronic configuration is similar to both the groups did so hydrogen. Composed of hydrogen in the table the Placement of hydrogen with alkali,... Hydrogen can be in both group 1 ) electronic configuration of hydrogen with metals! Interesting element, with an invisible flame hydrogen 's atomic number 1 (... Already closed by Expert ' ) ; copyright © 2021 Applect Learning Systems Pvt highly electronegative atom so properties! Related issues please contact on this number K 2, L 1 hydrogen 's atomic number 1 burns an! Shell, so it is placed above the halogen group such, it can also placed. Electron configuration like the alkali metals hydrogen has one electron in its valence shell number below for... And the alkali metals, which become liquid just above room temperature are all non-metals might hydrogen.

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