Question

Hydrogen shows similar properties with halogens. Which of the following properties does not match with the halogens?

A

Electronic configuration

B

Valency

C

Atomicity

D

None of the above

Medium

Solution

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Correct option is A)

The atomicity of hydrogen is two. It has one electron in its outermost shell and hence, the valency of hydrogen is also one. Electronic configuration does not match as the s orbital is half filled in hydrogen, which leads to s-s bonding, while p-p bonding exists in halogens, due to vacancy in p orbital.

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