question_answer

Which one of the following has largest number of isomers? (R = alkyl group, en= ethylenediamine)

A) \[{{[Ru{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]}^{+}}\]     

B) \[{{[Co{{(N{{H}_{3}})}_{5}}Cl]}^{2+}}\]

C)        \[{{[lr\,\,{{(P{{R}_{3}})}_{2}}\,H(CO)]}^{2+}}\]   

D) \[{{[Co{{(en)}_{2}}C{{l}_{2}}]}^{+}}\]

Correct Answer: D

Solution :

forms optical and geometrical isomers.