FeO (iron oxide . it's another name)
The correct answer is Iron(III)oxide which is Fe2O3
O2-
The chemical formula of hydronium ion is (H3O)+.For the "oxide ion" check your spelling.
The chemical symbol is Cu2+.
zinc oxide
The sulfite ion is SO32- It is not to be confused with sulfate, SO42-
Permanganate Symbol is MnO4- Valency of the ion is -1, the manganese is +7 and the oxygen -2. Potassium Permanganate symbol is KMnO4.
The chemical symbol for oxide is O3
The chemical formula of hydronium ion is (H3O)+.For the "oxide ion" check your spelling.
the chemical symbol for boron ion is B+++
the chemical symbol for boron ion is B+++
o2 because think about it o is for oxygen and the the di in dioxide means 2 ( by the way oxide is oxygen)
Al3+ ion
The chemical formula (not symbol) of silicon dioxide is SiO2.
HgO, this is formula for mercuric oxide.
BO
N2o
CaO
O2- is the formula for oxide ion. The negative symbol indicates the presence of anions and 2 represents the oxidation state.