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  4. Number of ligand around the central metal in a complex of Co+ 3 when NH3 is added in aqueous solution.

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Q. Number of ligand around the central metal in a complex of $Co^{+ 3}$ when $NH_{3}$ is added in aqueous solution.

NTA AbhyasNTA Abhyas 2022

Solution:

The cobalt ion has coordination number $6$ . It is coordinated to a total of six ligands in each complex, which satisfies the secondary valence of this ion.