Question

Point out the correct statement of the following about Na₂S₄O₆.
(a) Average oxidation number of S atom is +2
(b) Oxidation number of two S atoms is zero each and that of other two is +5 each
(c) Oxidation number of two S atoms is +1 each and that of other two is +4 each
(d) None of these

Answer 1

2(+1) +4x-6(2) =0

2+4x-12=0

x=10