Question
Question: Which one has largest number of isomers?...
Which one has largest number of isomers?
A
[Co(en)2Cl2]+
B
[Co(NH3)5Cl]2+
C
[Ir(PhR3)2H(CO)]2+
D
[Ru(NH3)4Cl2]+
Answer
Co(en)2Cl2+
Explanation
Solution
(1) [Co(en)2Cl2]+ shows geometrical as well as optical isomerism. (Only cis-form but not trans form as it has one of the symmetry elements).

