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the compound showing spin only mag moment 2.82 is a) [Ni(CO)4] b) [Ni(Cl)4]2- c ) [Ni(CN)4]2- THE ANSWER IS B BUT IAM VERY SURE THAT ITS C.....PLEASE HELP

the compound showing spin only mag moment 2.82 is


a) [Ni(CO)4] b) [Ni(Cl)4]2- c ) [Ni(CN)4]2-


THE ANSWER IS B BUT IAM VERY SURE THAT ITS C.....PLEASE HELP

Grade:9

1 Answers

Aditi Bhatnagar
31 Points
9 years ago

Hi Vikas

The correct answer is B Ni2+ ion has 8 ein 3d orbitals. so only 2 unpaired electrons are there. CN- IS STRONG LIGAND SO IT will PAIR UP THE 2 e-  AND FORM DSP2  hybridisation while Cl- is weak field ligand so it will not suppport pairing and form sp3 hybridisation. Thus in b option 2 unpaired electrons are still present leading to magnetic moment 2.82.

Hope that helps.

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