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Which of the following complex has zero magnetic moment (spin only)?

Options

  1. AN i N H 3 6 C l 2
  2. BN a 3 [ F e F 6 ]
  3. CC r H 2 O 6 S O 4
  4. DK 4 [ F e C N 6 ]

Correct answer

D. K 4 [ F e C N 6 ]

Step-by-step solution

Ferrocyanide ion F e C N 6 4 - is diamagnetic in nature hence K 4 [ F e C N 6 ] complex has zero magnetic moment. Fe atom 3d 6 4s 2 4p 0 Fe (II) d 2 sp 3 hybridisation

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