Question

$\mathrm{Cr}{}^{+3}$ in aquous medium form green coloured complex with $\mathrm{NH}{}_3$ ligand. How many ligand associated

• A. 3
• B. 4
• C. 5
• D. 6

Answer 1

Answer: (D)

$[\mathrm{Cr}(\mathrm{H}{}_2\mathrm{O}){}_6]{}^{+3}+6\mathrm{NH}{}_3\mathrm{s}\to [\mathrm{Cr}(\mathrm{NH}{}_3){}_6]{}^{+3}=+6\mathrm{H}{}_2\mathrm{O}$
$\mathrm{Cr}{}^{+3}$ show six C.N. with $\mathrm{NH}{}_3$