Chemistry, asked by supriya070402vs, 1 year ago

class11 cbse students plz try to answer my question from part-2 text book hydrogen chapter, pg no-276,277can anyone explain me about this topic "position of hydrogen in the periodic table"

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Answered by raminder1
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hi basically this topic includes the fact that hydrogen resembles with both alkali metals as well as with halogens see as we know that hydrogen has one electron in its outermost shell so either it can get one electron from somebody to complete its duplet or it can also give that electron to somebody and become h positive ion so it has two possibilities right now if we compare hydrogen with alkali metals then we can we can say that hydrogen resembles with alkali metals as we know that alkali metals has one electron in their outermost shell so it's easy for them to remove that electron from the shell to acquire stable noble gas configuration so they can easily lose that electron and become stable same is the case with hydrogen if it wants to become stable it can also lose its one electron from its shell so hydrogen in this way resembles with alkali metals
on the other hand if we say that hydrogen resembles with halogens that is also true because halogens like fluorine chlorine contains 7 electrons in the outermost shell which means that they only need one more electron to complete there octet and acquire stable noble gas configuration so same is the case with hydrogen as it has one electron in its shell it can gain one electron from some other atom and acquired stable configuration similar to that of halogens so it also resembles with halogens

supriya070402vs: can u give me some information based on that
raminder1: so?
raminder1: wait
supriya070402vs: in that page only plz explain me about that I didnot understand something they had given 50 to 200pm
raminder1: ok means I want to know about this quantity that is this is what is this 520.... yes or something else
raminder1: this 520 and some other quantities related to that which I mention on that page in the top paragraph they are the ionization energies do you know the meaning of ionization energy or I should tell you
supriya070402vs: I don't no forgot
raminder1: ok
raminder1: ionization energy is energy which we supply Tu remove electron from outermost shell so ionization energy is less in alkali metals as they contain only one electron at it is easy to remove that electron but it is more in case of halogens because in halogens there are 7 number of electrons in outermost 77 number of protons in nucleus and has been electron and proton both are opposite charges so they attract each other and so there is lot of attraction and it's
raminder1: difficult to remove electron from halogens so they have more value of ionization energy means they need more energy to remove electrons from their shells comparative to alkali metals which contain only one electron and proton and so there is less attraction due to which they have less value of ionization
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