What is the oxidation number of carbon in ion?
Calculation of oxidation number of carbon in ion:
Let oxidation number of Carbon in = x
The oxidation number of nitrogen =, since oxidation no. of Nitrogen atom, is taken as -3 when it is bonded with less electronegative element than it.
The sum of the oxidation number is the same as the charge on the ion.
Hence, oxidation number of Carbon in ion is .