1. Tardigrade
  2. Question
  3. Chemistry
  4. The primary and secondary valencies of chromium in the complex ion, dichlorodioxalatochromium (III), are respectively

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The primary and secondary valencies of chromium in the complex ion, $dichlorodioxalatochromium \,(III)$, are respectively

KEAMKEAM 2008Coordination Compounds

Solution:

The formula of dichlorodioxalatochromium (III) is
$ {{[Cr(C{{l}_{2}}){{(Ox)}_{2}}]}^{3-}} $
Primary valency of a metal $ (Cr) $ in the complex = oxidation number of that metal
$ =+3 $
Secondary valency of chromium in complex = coordination number
$ =+6 $
( $ \because $ Coordination number is the number of ligands attached to the central metal ion and oxalate ion is a bidentate ligand i.e, can coordinate at two positions)