Question

Average oxidation number of carbon in $C_3{O}_2,M{g}_2{C}_3$ are respectively

• A. -4/3, +4/3
• B. +4/3, -4/3
• C. -2/3, +2/3
• D. -2/3, +4/3

Answer 1

Answer: (B)

Let the oxidation number of carbon be x then
$C_3{O}_2=3x-4=0$
x = 4/3
$M{g}_2{C}_3=2\times 2+3x=0$
x = -3/4