What is the oxidation number of nitrogen in the nitrate ion?
Here are some of the rules for solving oxidation state of any element:
(1) The total charge of a stable compound is always equal to zero (meaning no charge).
For example, the
(2) If the substance is an ion (either there is a positive or negative charge) the total oxidation state of the ion is the charge (i.e. oxidation state of
(3) All elements from Group 1A has an oxidation state of +1 (e.g.
(4) Oxygen always have a charge -2 except for peroxide ion (
(5) Hydrogen always have a charge of +1 if it is bonded with a non-metal (as in the case of
So for your problem, according to rule 2, the overall oxidation state of
According to rule 4, the
Therefore, answer is