Question

N\(_2\) and O\(_2\) are converted into mono anions N\(_2^-\) and O\(_2^-\) respectively. Which of the following statements is wrong?

• A. In N\(_2^-\), the N–N bond weakens
• B. In O\(_2^-\), the O–O bond order increases
• C. In O\(_2^-\), bond length decreases
• D. N\(_2^-\) becomes diamagnetic

Hint:

Filling antibonding orbitals reduces bond order.

Answer 1

The Correct Option is B

Step 1: Adding electron to O\(_2\) fills antibonding orbital.
Step 2: Bond order decreases, not increases.