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The primary and secondary valencies of c...

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

A

3, 4

B

4, 3

C

3, 6

D

6, 3

Text Solution

Verified by Experts

The correct Answer is:
C
`CrCl_(2)(OX)_(2)^(-3)` primary valency is same as oxidation numbre and secondary valency is same as coordination number . As OX is bidentate and `Cl^(-)` is monodentate , secondary valency is 6. Priamary valency (OX no.) will be.
`x+2(-1)+2(-2)= -3`
or x = 3
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