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Ferrous ion changes to X ion on reacting with acidified hydrogen peroxide. The number of d-electrons present in X and its magnetic moment (in BM) are respectively

Options

  1. A6 and 6.93
  2. B5 and 5.92
  3. C5 and 4.9
  4. D4 and 5.92

Correct answer

B. 5 and 5.92

Step-by-step solution

Ferrous ion ( F e 2 + ) changes to ferric ion F e 3 + on reacting with acidified H 2 O 2 as. 2 Fe 2 + + H 2 O 2 + 2 H + ⟶ 2 Fe 3 + + 2 H 2 O Electronic configuration of F e 3 + = 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 5 Number of d -electrons = 5 Magnetic moment = n ( n + 2 ) = 5 ( 5 + 2 ) = 5 . 92 BM

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