Question

The coordination number of Pt in the complex ion $\left[Pt\right(en{)}_{2}C{l}_2{]}^{2+}$ is :

• A. 3
• B. 4
• C. 5
• D. 6

Answer 1

The correct option is D 6

Platinum is bonded with two types of ligands,

Ethylenediamine which is bidentate ligand is of two in number hence =4

Chloride which is an unindented ligand is of two in number hence=2

The coordination number of Pt in the complex ion $\left[Pt\right(en{)}_{2}C{l}_2{]}^{2+}$ is 6 because en is bidentate.