An oxidation state of Cr in K2Cr2O7
-
A.
7 -
B.
6 -
C.
5 -
D.
4
Correct Answer: Option B
Explanation
The oxidation state of K2Cr2O7 is +6. option A,C,D are the oxidation state of other elements like O7,C14, etc.
(+2 + 2x + (-2times7) =0)
(2x=12)
(x = +6)
There is an explanation video available below.