Coordination CompoundHard

Question

Which one of the following has an optical isomer ?
(en = ethylenediamine)

Options

A.[Zn(en)(NH3)3]2+
B.[Co(en)3]3+
C.[Co(H2O)4(en)]3+
D.[Zn(en)2]2+

Solution

Only option (2) is having non-super imposable mirror image & hence one optical isomer.
(1)(2)
(3)                        (4)

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