Question

The oxidation number of oxygen in $K{O}_3,N{a}_2{O}_2$ is

• A. 3, 2
• B. 1, 0
• C. 0, 1
• D. -0.33, -1

Answer 1

Answer: (D)

O.N. of O in $K{O}_3=1+3x=0$
$\therefore x=-1/3=-0.33$
O.N. of O in $N{a}_2{O}_2=2\times 1+2x=0$
$\therefore x=-1$