MCQ
Which compound has electrovalent, covalent, co-ordinate as well as hydrogen  bond?
  • $[Cu(H_2O)_4]SO_4 · H_2O$
  • B
    $[Zn(H_2O)_6]SO_4 ·H_2O$
  • C
    $[Fe(H_2O)_6 ]SO_4 ·H_2O$
  • D
    $[Fe(H_2O)_6 ]Cl_3$

Answer

Correct option: A.
$[Cu(H_2O)_4]SO_4 · H_2O$
a
The structure of $\mathrm{CuSO}_{4} .5 \mathrm{H}_{2} \mathrm{O}$ in the solid-state is shown above. The $\mathrm{Cu}^{2+}$ ions are attracted towards $\mathrm{SO}_{4}^{2-}$ ions not only by ionic interactions (electrovalent) but also by coordinate covalent bonds.

The $\mathrm{Cu}^{2+}$ ions form coordinate covalent bonds with water as well as sulfate ions. There are covalent bonds in water and sulfate ions.

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