Select correct pair of co-ordination compounds in which first complex compound,/ion is more stable than second compound/ion.

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Ni(CN)42−,NiNH362+

PdBr2NH32,PdBr(ONO)NH32

Co(SCN)42−,CoF63−

CrNH32(en)23+,Cr(en)33+

answer is A.

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Detailed Solution

Ni(CN)42− is square planar complex. Thus CFSE released in it is more than octahedral complex leading to more stability.

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