FeO (iron oxide . it's another name)
The correct answer is Iron(III)oxide which is Fe2O3
The chemical formula of hydronium ion is (H3O)+.For the "oxide ion" check your spelling.
The sulfite ion is SO32- It is not to be confused with sulfate, SO42-
There is no symbol for Al2O3 as it is a compound, chemical symbols are for elements
the symbol of ion is base on the lemement that you are trying to fin out
The chemical symbol is Cu2+.
The chemical symbol for oxide is O3
the chemical symbol for boron ion is B+++
The chemical symbol for nitrous oxide is N2O.
The chemical symbol for a silver ion is Ag+.
The chemical symbol for a sodium ion is Na+.
The chemical formula of hydronium ion is (H3O)+.For the "oxide ion" check your spelling.
The chemical symbol for phosphorus oxide is P2O5.
o2 because think about it o is for oxygen and the the di in dioxide means 2 ( by the way oxide is oxygen)
The chemical symbol for an ammonium ion is NH4+.
The chemical symbol for potassium ion is K+.
The chemical symbol for silver oxide is Ag2O.
the chemical symbol for boron ion is B+++