The oxidation number of chromium in potassium dichromate is

Question

The oxidation number of chromium in potassium dichromate is (A) 2 (B) 4 (C) 6 (D) 8

Tardigrade Admin · Accepted Answer

The sum of oxidation numbers of all the elements in a compound is zero. Let the oxidation number of C r be x ∴ for K 2 Cr 2 O 7+1 × 2+2 x+7(-2) =0 2+2 x-14 =0 2 x =12 x =6

Q. The oxidation number of chromium in potassium dichromate is

2

4

6

8

The sum of oxidation numbers of all the elements in a compound is zero.
Let the oxidation number of $C r$ be $x$
$∴$ for $K_{2} C r_{2} O_{7} + 1 \times 2 + 2 x + 7 (- 2) = 0$
$2 + 2 x - 14 = 0$
$2 x = 12$
$x = 6$

Q. The oxidation number of chromium in potassium dichromate is

2

4

6

8

The sum of oxidation numbers of all the elements in a compound is zero. Let the oxidation number of Cr be x ∴ for K2​Cr2​O7​+1×2+2x+7(−2)=0 2+2x−14=0 2x=12 x=6

The sum of oxidation numbers of all the elements in a compound is zero.
Let the oxidation number of $C r$ be $x$
$∴$ for $K_{2} C r_{2} O_{7} + 1 \times 2 + 2 x + 7 (- 2) = 0$
$2 + 2 x - 14 = 0$
$2 x = 12$
$x = 6$