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MHT CET202523 Apr 2025Morning ShiftChemistryd and f Block ElementsActual

Find the value of spin only magnetic moment for Zn ²⁺ in BM .

Options

  1. A1.73
  2. B2.84
  3. C0.00
  4. D3.87

Correct answer

C. 0.00

Step-by-step solution

Spin-only magnetic moment for Zn ²⁺ Zinc (atomic number 30) has the ground state configuration [ Ar ] 3d¹⁰ 4s^2 . Upon forming the Zn ²⁺ ion, the two 4s electrons are lost, resulting in the configuration [ Zn ²⁺] = [ Ar ] 3d¹⁰ . All d orbitals are fully occupied with paired electrons, giving n = 0 unpaired electrons. The magnetic moment formula yields = n(n+2) = 0 = 0 BM . The spin-only magnetic moment is 0 BM .

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