A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet-coloured) and B…

Question

A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet-coloured) and B (green-coloured). A can show optical activity, but, B is optically inactive. What type of isomers do A and B represent?

MARKS Content Team · Accepted Answer

Correct answer: (D) Geometrical isomers. The coordination number of cobalt is 6. The mole ratio of CoCl_3 and en is 1 : 2. Hence, CoCl_3+2 en→Coen_2Cl_2 Cl The complex formed shows geometrical isomerism. The complex exists as cis and trans isomers among which the trans isomer is optically inactive.

A reaction of cobalt $(III)$ chloride and ethylenediamine in a $1 : 2$ mole ratio generates two isomeric products $A$ (violet-coloured) and $B$ (green-coloured). $A$ can show optical activity, but, $B$ is optically inactive. What type of isomers do $A$ and $B$ represent?

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