Q. Decreasing order of stability of $O_2$, $O_2^-$, $O_2^+$ and $O_2^{2-}$ is :-
A) $O_2 > O_2^+ > O_2^{2-} > O_2^-$
B) $O_2^- > O_2^{2-} > O_2^+ > O_2$
C) $O_2^+ > O_2 > O_2^- > O_2^{2-}$
D) $O_2^{2-} > O_2^- > O_2 > O_2^+$
Explanation
[Solution] Bond orders: $O_2^+$ 2.5, $O_2$ 2, $O_2^-$ 1.5, $O_2^{2-}$ 1. Stability follows bond order. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.