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CBSE Class 12 · 2023 · Coordination CompoundsMultiple Choice

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The magnetic moment of [NiCl] is [Atomic number: Ni = 28]
  1. (A)1.82 BM
  2. (B)2.82 BM✓ Correct
  3. (C)4.42 BM
  4. (D)5.46 BM

Answer: (B)

Solution

Ni oxidation state: x + 4(−1) = −2 ⇒ Ni = [Ar]3d.
Cl is a weak-field ligand → tetrahedral sp, no pairing: 3d keeps 2 unpaired electrons.

Correct option: (B).

CBSE Class 12 Board · 2023 · Single correct option

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