Question

How to distinguish between d and l isomer in Optical Isomerism for Coordination Compounds?

Answer 1

The concept of dextro and leavo is purely from experiment. Not by seeing the molecule you can tell. But in biomolecules majority of the isomers are represented as D or L. This is called absolute configuration. If the OH group on the penultimate carbon (ie one prior to the last carbon) is right its D and if its left its L isomer