JEE MAIN - Chemistry (2019 - 10th January Evening Slot - No. 10)

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 does A and B represcent?
Ionisation isomers
Linkage isomers
Coordination isomers
Geometrical isomers

Explanation

CoCl3 + en $$ \to $$ [Co(en)2Cl2]Cl
   1      :   2

A and B are Geometrical isomers.

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