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BITSAT2021ChemistryChemical Bonding and Molecular StructureActual

Which one of the following ions has the maximum magnetic moment?

Options

  1. ASc ³⁺
  2. BTi ³⁺
  3. CCr ³⁺
  4. DFe ³⁺

Correct answer

D. Fe ³⁺

Step-by-step solution

Fe ³⁺ (d⁵ ) has 5 unpaired electrons therefore magneticmoment = n(n+2) = 5(5+2) =5.91 which is maximum among given options. As Sc ³⁺, Ti ³⁺, Cr ³⁺ and V ³⁺ contain 0,1,3 , and 2 number of unpaired electrons respectively.

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