hydrogen can be placed in group 1 and group 7 of periodic table .why?
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hydrogen is the element which is alkyl metal and halogen also. that is why hydrogen can........
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ANSWER :
Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups.
Like group I elements, hydrogen has only one electron in its valence shell. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 (alkali metals).
However, like group 17 elements, it requires only electron to complete its valence shell, thus it can also gain an electron to achieve a noble gas configuration
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