Question

Which of the following will given maximum number of isomers?

• A. $\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}$
• B. $\left[Ni\right(en\left)\right(N{H}_3{)}_4{]}^{2+}$
• C. $\left[Cr\right(SCN{)}_2\left(N{H}_3{)}_4^{+}\right]$
• D. $\left[Ni\right(C_2{O}_4\left)\right(en{)}_2{]}^{2+}$

Answer 1

The correct option is A $\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}$

It can cis-trans isomers and also has stereo isomers in the trans state while others have only two isomeric structures.