Question

The number of water molecules acting as ligands in $CuS{O}_4.5H_{2}O,ZnS{O}_4.5H_{2}O,FeS{O}_4.7H_{2}O$ respectively are:

• A. $5,5,7$
• B. $4,5,4$
• C. $4,4,6$
• D. $4,4,7$

Answer 1

The correct option is C $4,4,6$

The coordination number of $C{u}^{2+},Z{n}^{2+}$ and $F{e}^{2+}$ are $4,4$ and $6$ respectively.
The complexes are:
$\left[Cu\right(H_{2}O{)}_4]S{O}_4.H_{2}O$
$\left[Zn\right(H_{2}O{)}_4]S{O}_4.H_{2}O$
$\left[Fe\right(H_{2}O{)}_6]S{O}_4.H_{2}O$