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Question

In K4Fe(CN)6


A

CN fulfills primary valency

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B

CN fulfills secondary valency

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C

K is linked with secondary valency

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D

K is linked with non-ionic valency

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Solution

The correct option is B

CN fulfills secondary valency


Couple things you need to remember here:
Primary valency : oxidation number
Secondary valency : coordination number

CN fulfills secondary valency


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