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

Question

The primary and secondary valencies of chromium in the complex ion, dichlorodioxalatochromium (III), are respectively (A) 3, 4 (B) 4, 3 (C) 3,6 (D) 6, 3

Tardigrade Admin · Accepted Answer

The formula of dichlorodioxalatochromium (III) is

[C r (C l_{2}) (O x)_{2}]^{3 -}

Primary valency of a metal

(C r)

in the complex = oxidation number of that metal

= + 3

Secondary valency of chromium in complex = coordination number

= + 6

(

∵

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)

Q. The primary and secondary valencies of chromium in the complex ion, $d i c h l oro d i o x a l a t oc h ro mi u m (III)$ , are respectively

3, 4

4, 3

3,6

6, 3

4, 4

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

3, 4

4, 3

3,6

6, 3

4, 4

Q. The primary and secondary valencies of chromium in the complex ion, $d i c h l oro d i o x a l a t oc h ro mi u m (III)$ , are respectively