Cerium can be bi-, tri- or tetravalent.
Never. iron shows either +2 or +3 oxidation state but in Fe3O4 its oxidation state is seems to +4 but it is actually mixture of one moles FeO and one mole Fe2O3 , (FeO.Fe2O3 = Fe3O4).
Manganese
K = +1 oxidation state Cl = +3 oxidation state O = -2 oxidation state
O = -2 oxidation state H = +1 oxidation state
S = +4 oxidation state O = -2 oxidation state
Cerium(III) is more stable
cerium
Cerium
Promethium has similar chemical properties as cerium; the oxidation state is 3+.
The Cerium ion can hold a charge of +2, +3 and +4. The +2 state is rare can only seen with elements H2, I2, and S. Often seen in the form of Cerium(IV) oxide.
This is a neutral compound. Na shows the +1 OXIDATION NUMBER.
Cerium is a solid at room temperature
BA is in the group2. It generally shows +2 oxidation state.
Never. iron shows either +2 or +3 oxidation state but in Fe3O4 its oxidation state is seems to +4 but it is actually mixture of one moles FeO and one mole Fe2O3 , (FeO.Fe2O3 = Fe3O4).
Manganese
It shows some oxidation numbers. Generally it shows +4 oxidation numbers.
It contains only two elements. N shows +1 and oxygen shows -2.