1.

Which oneof the following has largest number of isomers ?

Answer»

`[CR(SCN)_2(CH_3)_4]^(+)`
`[CO(NH_3)_5Cl]^(2+)`
`[Ni(en)(NH_3)_4]^(2+)`
`[Co(en)_2Cl_2]^(+)`

ANSWER :A


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