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JEE Main202117 Mar 2021Morning ShiftChemistryCoordination CompoundsActual

What is the spin-only magnetic moment value (B.M.) of a divalent metal ion with atomic number 25 , in its aqueous solution?

Options

  1. A5 . 92
  2. B5 . 0
  3. Czero
  4. D5 . 26

Correct answer

A. 5 . 92

Step-by-step solution

Electronic configuration of divalent metal ion having atomic number 25 is Total number of unpaired electrons = 5 μ (Magnetic moment) = n ( n + 2 ) BM where n = number of unpaired e ∴ μ = 5 ( 5 + 2 ) = 35   B . M . = 5 . 92   B . M .

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