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Introduction to Optical Isomerism

The ligand an...

Question

The ligand and the coordination number for the central ion in $[C o (N H_{3})_{2} (N O_{2})_{4}]^{-}$ are :

Ligand-

N H_{3}, N O_{2}

C.N.-

6

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Ligand-

N H_{3}, N O_{2}

C.N.-

4

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Ligand-

N H_{2}, N O_{3}

C.N.-

6

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None of the above

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Solution

The correct option is D Ligand- $N H_{3}, N O_{2}$ C.N.- $6$
There are 2 $N H_{3}$ molecules and 4 $N O_{2}$ molecules forming $[C o (N H_{3})_{2} (N O_{2})_{4}]^{-}$ complex. Hence the coordination no. is 6.

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