Question

How to find the oxidation number of cr(oh) _3

Answer 1

Cr(OH)

x+(-1)3=0

x-3 =0

x=3

Answer 2

let take that the oxidation num of Cr is = x
then ... for calculate oxidation num u will have know some compound or element oxidation num like OH ,Cl and etc ...
so as I think .. OH is having -1 oxidation state so ...
x +3(-1)=o.
x=+3 ...