-2 for O
+3 for Cr
The oxidation number of manganese in manganese oxide (MnO) is +2. This is because oxygen typically has an oxidation number of -2 and in a neutral compound like manganese oxide, the oxidation numbers must add up to zero. Hence, manganese must be in the +2 oxidation state to balance the -2 oxidation state of oxygen.
feo2 feo3 feo4
Fe2O3 +3 for each Fe -2 for each O
The oxidation number of NO, nitrogen oxide, is +3.
The oxidation state for oxygen in the oxide ion (O2-) is -2. Oxygen typically has an oxidation state of -2 in most of its compounds.
The oxidation number of manganese in manganese oxide (MnO) is +2. This is because oxygen typically has an oxidation number of -2 and in a neutral compound like manganese oxide, the oxidation numbers must add up to zero. Hence, manganese must be in the +2 oxidation state to balance the -2 oxidation state of oxygen.
The oxidation numbers for the atoms in magnesium oxide are: Mg+2 and O-2.
feo2 feo3 feo4
Fe2O3 +3 for each Fe -2 for each O
The oxidation number of NO, nitrogen oxide, is +3.
The oxidation state for oxygen in the oxide ion (O2-) is -2. Oxygen typically has an oxidation state of -2 in most of its compounds.
CrBr3
The oxidation number of Fe in FeO (iron oxide) is +2. This is because oxygen typically has an oxidation number of -2, and in a neutral compound like FeO, the oxidation numbers must balance out to zero.
The oxidation number of potassium in potassium oxide is +1. Potassium is an alkali metal that typically has a +1 oxidation state when it forms compounds.
The oxidation number of Mn in manganese VII oxide is +7. This is because oxygen typically has an oxidation number of -2, and there are two oxygen atoms in manganese VII oxide, giving a total oxidation number of -4. To balance the compound's charge of 0, manganese must have an oxidation number of +7.
The oxidation number for lithium is +1 and for oxygen is -2. In lithium oxide (Li2O), lithium has an oxidation number of +1 and oxygen has an oxidation number of -2. Therefore, the change in oxidation number for lithium oxide is -1 for lithium.
I am going to assume you meant ferrous oxide. Ferrous oxide is also known as Iron(II) oxide and has the formula unit FeO. The oxidation number of iron in iron(II) oxide is +2.