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MCQ

Question

The magnetic moment of [Ni(H₂O)6]2+ is approximately: (Ni atomic number = 28)

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1.73 BM 3.87 BM 5.92 BM 2.83 BM Correct

Ni₂+ (d8) in [Ni(H₂O)6]2+ (octahedral) with weak field H₂O is high spin (t2g6 eg2), 2 unpaired electrons. Magnetic moment = √[2(2+2)] = √8 ≈ 2.83 BM.

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