Question

Calculate the oxidatin number of the following compounds.

    (i) Co2   (ii) H2 SO4   (iii) Cr2O72-​

Answer 1

Answer:

carbon =+4

S=+6

Cr=+6

these are the oxidation no

Answer 2

Explanation:

c = +2

s = +6

cr = +7

helpful for u my friend