In the NO3- ion, each oxygen is assigned an oxidation state of -2. Since N-6 = -1, the oxidation state of nitrogen in NO3- will be +5.

hydrogen

+1

By definition, the oxidation number of an atom is the charge that atom would have if the compound was composed of ions. 1. The oxidation number of an atom is zero in a neutral substance that contains atoms of only one element. The oxidation number of simple ions is equal to the charge on the ion.

-2

Oxygen has an oxidation number of +2 because the single oxygen atom has “gained” a total of two electrons, one from each hydrogen. In hydrogen peroxide, each hydrogen still has an oxidation number of +1 because each hydrogen “gives up” a single electron to oxygen.

1

The fluorine is more electronegative and has an oxidation state of -1.

The oxidation state of O is -2 and the oxidation state of Li is +1.

The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. 5. The oxidation number of O in its compounds is usually -2, but it is -1 in peroxides.

The oxidation number of chlorine are +1,+3,+5,+7 and -1. However for Chlorine gas, the oxidation number (Cl2) is zero.

The oxidation number of chlorine can be -1, 0, +1, +3, +4, +5, or +7, depending on the substance containing the chlorine.

+5

Chlorine has an oxidation state of -1 (no fluorine or oxygen atoms are present).

what is the oxidation state of FeSO4? The sulfate ion is SO42- therefore S has an oxidation number of +6 (oxygen is -2 and Fe is +2) 0 0 0.