JEE MAIN - Chemistry (2021 - 26th August Evening Shift - No. 7)

Indicate the complex/complex ion which did not show any geometrical isomerism :
[CoCl2(en)2]
[Co(CN)5(NC)]3$$-$$
[Co(NH3)3(NO2)3]
[Co(NH3)4Cl2]+

Explanation

(a) [CoCl2(en)2] show Cis-trans isomerism

(b) [Co(CN)5(NC)]3$$-$$ can't show G.I.

(3) [Co(NH3)3(NO2)3] show fac & mer isomerism

(d) [Co(NH3)4Cl2]+ show cis & trans isomerism

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