Question

Which of the following molecule stabilizes by removal of electron?

• A. $C_2$
• B. $O_2$
• C. $N_2$
• D. $H_2$

Answer 1

The correct option is B $O_2$

In all these molecules that is, $C_2,O_2,,N_2$ and $H_2$.

$O_2$, is stabilized by removal of electrons because it is having electrons in the anti-bonding orbital. And thus removal of electron from the anti bonding orbital , increases the bond order of $O_2$. And thus is becomes more stable after removal of electrons. Bond order of $O_2{}^{+}$ is 2.5 than that of $O_2$ which is having bond order as 2. Therefore the answer is option $B$.