Question

The oxidation number of C in $CO_{2}$is.

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

Answer 1

Answer: (D)

• 4

Answer 2

$\overset{*}{CO_{2}}x + 2( - 2) = 0$; $x - 4 = 0$; $x = + 4$.