Question

In which of the following, all four types of bonds i.e. ionic, covalent, dative, and hydrogen bonds are present?

• A. Ice
• B. $BeS{O}_4.4H_{2}O$
• C. $CuS{O}_4.5H_{2}O$
• D. $BaC{l}_2.2H_{2}O$

Answer 1

Answer: (C)

$CuS{O}_4.5H_{2}O$

$CuS{O}_4\cdot 5H_{2}O$ exists as $\left[Cu\right(H_{2}O{)}_4{]}^{2+}S{O}_4^{2-}\cdot H_{2}O$.

It has dative bonds in $\left[Cu\right(H_{2}O{)}_4{]}^{2+}$, which is between water molecules and $Cu$. There is an ionic bond between the coordination sphere and $S{O}_4^{2-}$ ion.

The covalent bond between $S$ and $O$ in $S{O}_4^{2-}$ ions and between $H$ and $O$ in water molecules. Within the molecules of $H_{2}O$, there is hydrogen bonding.

Hence, option C is correct.