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A metal complex having the composition C...

A metal complex having the composition `Cr(NH_3)_4Cl_2 Br` has been isolated in two forms A and B. The form A reacts with `AgNO_3` to give a white precipitate readily soluble in dilute aqueous ammonia whereas B gives a pale yellow precipitate soluble in concentrated ammonia.
The oxidation state of Cr in complex A is

A

`+1`

B

`+2`

C

`+3`

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
Oxidation state of `Cr(x) " is " x - 2 - 1= 0 rArr x = + 3`
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