MCQ
In solid $CuS{O_4}.5{H_2}O$ copper is co-ordinated to
  • A
    Five water molecules
  • Four water molecules
  • C
    One sulphate anion
  • D
    One water molecule

Answer

Correct option: B.
Four water molecules
b
(b)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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