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Question

Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behavior?

A
[Co(CN)6]3
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B
[Fe(CN)6]3
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C
[Mn(CN)6]3
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D
[Cr(CN)6]3
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Solution

The correct option is A [Co(CN)6]3
CN is a strong field ligand.


In case of [Co(CN)6]3, there is no unpaired electron. Hence it has lowest value of paramagnetic behaviour.

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