Question

Oxidation number of number of sulphur in Na2S2O8

Answer 1

Explanation:

Na will be 1

sulphur we dont know so x as there are 2 moles sulphurs so 2x

and oxygen we know that -2 as there are 8 oxygen atoms so it is -2(8)

so 1+2x-16=0

-2x=15 then

x will be 15/2

hope this will help you