The tendency to exhibit `-3` oxidation state by a group VA element decreases down the group. Why ?

The tendency to exhibit -3 oxidation state by a group VA element decreases down. Why?

Ionisation enthalphy of group - 16 elements decreases down the group Why?

Oxidation state of zero group elements is

Give reasons: The stability of +3 oxidation state of 13 group elements decreases down the group.

Why does stability of + 6 oxidation state of group - 16 elements decrease down a group ?

Why the stability of higher oxidation state of the 14th group elements decrease down the group?

The element that exhibits negative oxidatio0n state In IIIA group elements is

Explain why the tendency of group-15 elements to exhibit- 3 oxidation state decreases as we moue down the group.