Question

Which kinds of isomerism is exhibited by octahedral $Co(N{H}_3)B{r}_{2}Cl$ ? (1) Optical (2) Geometrical (3) Linkage (4) lonisation

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (C)

Octahedral $Co{(N{H}_3)}_{4}B{r}_{2}Cl$ shows ionisation and geometrical isomerism. In ionisation isomerism ligands show different coordination sphere and the anions present outside the coordination sphere.
$[Co{(N{H}_3)}_{4}B{r}_2]Cl{[Co{(N{H}_3)}_{4}B{r}_2]}^{+}+C{l}^{-}$
$[Co{(N{H}_3)}_{4}BrCl]Br{[Co{(N{H}_3)}_{4}BrCl]}^{+}+B{r}^{-}$
In geometrical isomerism, coordination number of central atom is six and shape is octahedral.