Question

oxidation number of
cr in K2 Cr2O7 with explanation ?​

Answer 1

Answer:

it's +12

Explanation:

oxidation no.of S group 1 is +1 ,ie (k =+1)

oxidation no.of O = -2

$2( + 1) + 2(x) + 7( - 2) = 0$

$=$

$2(x) = 14 - 2$

$2x = 12$

$x = 6$