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  • On moving down the group in Boron family the stability of +1 oxidation state increases and it is due toOption: 1 Decrease in electronegativity</d

On moving down the group in Boron family the stability of +1 oxidation state increases and it is due to

Option: 1

Decrease in electronegativity


Option: 2

Increase in metallic character


Option: 3

Inert pair effect


Option: 4

Increase in size


Answers (1)

best_answer

The phenomenon in which outer shell s electrons (ns2) penetrate to (n-1) d-electrons and thus become closer to nucleus and are more effectively pulled by the nucleus

This results in less availability of ns2 electrons pair for bonding or ns2 electron pair becomes inert.

On moving down the group size of atom increases due to which  ns2 electron has less tendency to participate bond which results decrease in oxidation number by two unit.

Therefore, option (3) is correct.

Posted by

jitender.kumar

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