Which of the following molecule(s) is/are showing optical isomerism?
Identify the optically active compounds from the following (a) [Co(en)3]3+ (b) trans−[Co(en)2Cl2]+ (c) cis−[Co(en)2Cl2]+ (d) [Cr(NH3)5Cl]
The d and l isomer of [Co(en)3]3+ are type of: