In which of the following processes does the bond order increase and paramagnetic character change to diamagnetic?

Question

Canvas Classes · Accepted Answer

Step 1 — Analyse each process:

(1) : Remove 1e⁻ from π
- : BO = 2, paramagnetic (2 unpaired e⁻)
- : BO = 2.5, paramagnetic (1 unpaired e⁻)
- BO increases ✓ but still paramagnetic ✗

(2) : Add 2e⁻ to π
- : BO = 1, diamagnetic ✓
- BO decreases ✗

(3) : Remove 1e⁻ from π (antibonding)
- NO: BO = 2.5, paramagnetic (1 unpaired e⁻ in π)
- : BO = 3 (isoelectronic with N₂), diamagnetic ✓
- BO increases ✓ AND changes to diamagnetic ✓

(4) : Remove 1e⁻ from bonding σ
- BO decreases from 3 to 2.5 ✗

Answe

More questions from Chemical Bonding