Which complex can exist as a pair of enantiomers?
[Co(en)3]3+ (octahedral) with 3 bidentate en ligands lacks symmetry, forming non-superimposable mirror images (enantiomers).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds