Question

The number of water molecule(s) directly bonded to the metal centre in $CuS{O}_4.5H_{2}O$ is :

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (D)

4

In $CuS{O}_4.5H_{2}O$the metal ion is six coordinated. The coordination groups around the cupric ion are composed of 4 $H_{2}O$ and two oxygen atoms of sulphate ions and the fifth $H_{2}O$ is held between water molecules attached to cations and oxygen atoms of sulphate ions. The structure is given above.

The number of water molecule(s) directly bonded to the metal centre in $CuS{O}_4.5H_{2}O$ is 4.