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Q.

Which of the following are diamagnetic? (I) K4Fe(CN)6    (II) K3Cr(CN)6 (III) K3Co(CN)6 (IV) K2Ni(CN)4Select the correct answer using the codes given below:

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a

I, II and IV

b

I, III and IV

c

II and III

d

I and IV

answer is B.

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Detailed Solution

K4Fe(CN)6→0 unpaired electron. K3Cr(CN)6→3 unpaired electrons. K3Co(CN)6→0 unpaired electron. K2Ni(CN)4→0 unpaired electron.
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