Question

Oxidation number of carbon in $H_{2}C_{2}O_{4}$ is.

• A.
  • 4
• B.
  • 3
• C.
  • 2
• D. – 2

Answer 1

Answer: (B)

• 3

Answer 2

$\overset{*}{H_{2}C_{2}O_{4}}$

$2 + 2x - 2 \times 4 = 0$; $2x = 8 - 2 = 6$

$x = \frac{6}{2} = + 3$.