Which one of the following has largest number of isomers?
(a) [Ru(NH3)4Cl2]

(b) [Co(NH3)5Cl]2+

(c) [Ir(PR3)2H(CO)]2+ 

(d) [Co(en)2Cl2]+
(R = alkyl group, en = ethylenediamine)

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1 Answers

(d) : [Co(en)2Cl2]+ shows geometrical as well as optical isomerism.

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