Question

The secondary valency of platinum in tetraamminedichloroplatinum $(IV)$ chloride is

• A. 4
• B. 2
• C. 3
• D. 6

Answer 1

Answer: (D)

6

Answer 2

Secondary valency corresponds to the coordination number. The formula of the given complex is $\left[ Pt Cl _{2}\left( NH _{3}\right)_{4}\right] Cl _{2}$. In it coordination number of $Pt =2+4=6$ $\therefore$ Secondary valency of $Pt =6$.