Quiz What is the coordination number of Co in +?

What is the coordination number of Co in [Co(en)2 C12]+?

CBSE Chemistry class 12 question and answer | What is the coordination number of Co in [Co(en)2 C12]+?

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February 27, 2024

What is the coordination number of Co in [Co(en)2 C12]+?

Ans.

In the coordination compound $[C o (e n)_{2} C l_{2}]^{+}$ , the coordination number of cobalt (Co) can be determined by examining the number of ligands directly attached to the central cobalt ion.

Here, the ligands are ethylenediamine (en) molecules and chloride ions (Cl^-).

From the formula, we see that there are 2 ethylenediamine (en) molecules, each contributing 2 nitrogen atoms (N) to coordinate with the cobalt ion. Therefore, there are a total of 4 nitrogen atoms from the ethylenediamine ligands.

Additionally, there are 2 chloride ions (Cl^-) coordinating with the cobalt ion.

Hence, the total number of ligands coordinating with the cobalt ion is 4 (from ethylenediamine) + 2 (from chloride ions) = 6.

Therefore, the coordination number of cobalt (Co) in $[C o (e n)_{2} C l_{2}]^{+}$ is 6.