Question

The decrease in stability of higher oxidation state in p - block with increasing atomic number is due to

• A. Increase in bond energy as going down the group
• B. The reluctance of s - sub shell electrons to participate in the chemical bonding
• C. Both are correct
• D. None is correct.

Answer 1

The correct option is B The reluctance of s - sub shell electrons to participate in the chemical bonding

Down the group, the inert pair effect is more pronounced due to decrease in bond energy down the group.
So, more energy is required to make the electrons in s- subshell to participate in chemical bonding and stability of higher oxidation state in p- block decreases with increase in atomic number.