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Q.

Which of the following statements is correct?

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a

CoF63− and CoNH363+ both are paramagnetic complexes.

b

CoF63− and CoNH363+ both are high spin complexes.

c

CoF63− is octahedral while CoNH363+ has a pentagonal pyramidal shape.

d

CoF63− is outer orbital complex while CoNH363+ is inner orbital complex.

answer is D.

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Detailed Solution

CoF63−→sp3d2; outer orbital complex CoNH363+→d2sp3; inner orbital complex CoH2O62+→3 unpaired electrons. NiH2O62+→2 unpaired electrons.
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