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NEET2020ChemistryStructure of AtomActual

The calculated spin only magnetic moment of Cr 2 + ion is

Options

  1. A4.90   BM
  2. B5.92   BM
  3. C2.84   BM
  4. D3.87   BM

Correct answer

A. 4.90   BM

Step-by-step solution

Cr + 2 = 3 d 4 n = number of unpaired electrons. μ = n ( n + 2 )   B . M .   = 4 ( 6 ) = 24   B . M .   = 4 . 90   B . M .

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