A) Five water molecules
B) Four water molecules
C) One sulphate anion
D) One water molecule
Correct Answer: B
Solution :
Four water molecules. \[CuS{{O}_{4}}.5{{H}_{2}}O\] 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 co-ordinated water molecule and one of the sulphate ion.
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