Which one of the following species doesn't have a magnetic moment of 1.73 BM (spin only value)?

Question

Canvas Classes · Accepted Answer

Magnetic moment  BM, where n = unpaired electrons.
For 1.73 BM:  → n = 1 unpaired electron.

Step 1 — Check each species:

(15e⁻): π has 1 electron → 1 unpaired → μ = 1.73 BM ✓

CuI: Cu⁺ has d¹⁰ configuration → 0 unpaired → μ = 0 BM ✗ (doesn't have 1.73 BM)

: Cu²⁺ has d⁹ → 1 unpaired → μ = 1.73 BM ✓

(17e⁻): π has 3 electrons → 1 unpaired → μ = 1.73 BM ✓

Step 2: CuI (Cu⁺, d¹⁰) has 0 unpaired electrons → μ = 0 BM → doesn't have 1.73 BM

Answer: Option (2) — CuI

More questions from Chemical Bonding