1.

Tris (ethylenediamine) cobalt (III) cation, [Co(en)_3]^(3+), can have

Answer»

(a) three stereoisomers, all chiral and optically ACTIVE
(B) two chiral stereoisomers (ENANTIOMERS) and one achiral
(c) three stereisomers, all archiral
(d) two stereoisomers, both achiral

Solution :
Optical isomers (d and c) of `[Co(en)_3]^(3+)`
Optical isomers have mirror images that cannot be SUPERIMPOSED on one another. These are called as enantiomers. The molecules or IONS that cannot be superimposed are called chiral.


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