Which of the following coordination compounds would exhibit optical isomerism

Options

(a) Pentaamminenitrocobalt (III) iodide
(b) Diamminedichloroplatinum(II)
(c) Trans-dicyanobis(ethylenediamine) chromium(III) chloride
(d) Tris-(ethylenediamine)cobalt(III) bromide

Correct Answer:

Tris-(ethylenediamine)cobalt(III) bromide

Explanation:

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