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Q.

Spin only magnetic moment of ${[F e {(C N)}_{6}]}^{- 4}$ is zero. what is the geometry of the complex ion?

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a

$S P^{3}$ tetrahedral

b

$d^{2} S P^{3}$ octahedral

c

$d S P^{2}$ square planar

d

$S P^{3} d^{2}$ octahedral

answer is A.

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Detailed Solution

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$F e^{+ 2} 4 S^{0} 3 d^{6}$ Question Image it has no unpaired electrons.

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