The spin only magnetic moment value(in Bohr magneton units) of Cr(CO)₆ is
0 correct as per chemistry principle.
Ref: NCERT Chemistry Class XII — Coordination Compounds
#Bohr magneton
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What is the magnetic moment (in BM) of Fe 3+ ion? (Atomic number of Fe = 26)
Fe 3+ has 5 unpaired electrons (3d 5 ). Magnetic moment = √[5(5+2)] = 5.92 BM.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Oxidation States and Colour and Magnetic Properties of d-Block
What is the magnetic moment (in BM) of a transition metal ion with 4 unpaired electrons?
Using the spin-only formula: μ = √[n(n+2)] = √[4(4+2)] = √24 ≈ 4.90 BM
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Oxidation States and Colour and Magnetic Properties of d-Block
