A) five water molecules
B) four water molecules
C) one sulphate anion
D) one water molecule
Correct Answer: B
Solution :
\[CuS{{O}_{4}}.\,\,5{{H}_{2}}O\] is a crystalline salt. Four \[{{H}_{2}}O\] molecules attach to copper, forming a square planar symmetry and two oxygen atoms from \[SO_{4}^{2-}\] ion complete the distorted octahedron. The fifth water molecule is attached through hydrogen bonding between one of the coordinated water molecule and one of the sulphate ion.
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