Question

$[Co(en{)}_3{]}^{3+}$ ion is expected to show

• A. two optically active isomers: d and I forms
• B. d, I and meso forms
• C. four optically active isomers: cis, d and l isomers and trans d and l isomers
• D. none of these

Answer 1

Answer: (A)

$[Co(en{)}_3{]}^{3+}$ ion due to absence of one of the symmetry elements it has two $d$- and $l$-optically active forms.