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Which of the following explanation justifies for not placing hydrogen in either the group of alkali metals or halogens?

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By Expert Faculty of Sri Chaitanya
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a
The ionisation energy of the hydrogen is too high for group of alkali metals and too low for the halogens containing group
b
Hydrogen atom does not contain any neutron
c
Hydrogen is much lighter than the alkali metals or halogens
d
Hydrogen can form compounds with almost all other elements
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detailed solution

Correct option is A

The ionisation energy value of hydrogen is too high as compared to alkali metals and too low as compared to halogens and thus, it cannot be placed in any of these two groups

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