The magnetic moment of a transition metal compound has been calculated to be 3.87 BM. The metal ion is:

Question

Canvas Classes · Accepted Answer

Spin-only magnetic moment:  BM

Given  BM:

Need ion with 3 unpaired electrons (in +2 state):

| Ion | M²⁺ Config | Unpaired e⁻ |  (BM) |
|-----|------------|-------------|------------|
| Cr²⁺ |  | 4 | 4.90 |
| Mn²⁺ |  | 5 | 5.92 |
| V²⁺ |  | 3 | 3.87 ✓ |
| Ti²⁺ |  | 2 | 2.83 |

:  → 3 unpaired electrons →  BM ✓

Answer: Option (3) —

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