Which of the following statement is true regarding the following balanced half-reaction?
`CN^(-) rarr CNO^(-)`

Options

A. Carbon is losing two electrons per atom
B. Oxidation number of carbon increase from `+1 " to " +3`
C. Oxidation number of nitrogen remains constant
D. Both (a) and (c)

Answer

D

Explanation

In the given redox reaction,
`C^(-) -= N rarr O^(-) - C -= N`
Oxidation number of nitrogen is remaining unchanged at `-3`. Oxidation number of carbon is increasing from `+2 " to " +4`.
Hence (a) and (c) are the only correct response. therefore, option (d) is correct.