The formula is Ti2O3
TiO2 Containing one titanium atom and two oxygen atoms.
TiO is the formula of titanium (II) oxide
TiO
The compound formula for titanium(IV) oxide is TiO2.
TiCO3 is the chemical formula of titanium carbonate.
The compound formula for titanium(IV) oxide is TiO2. It is also commonly known as titanium dioxide.
Titanium(III) oxide
TiO3 does not exist. You may mean Dititanium trioxide, Ti2O3 which exists and is Titanium(III) oxide. an ionic formula fro this would be (Ti3+)2 (O2-)3.
The chemical formula for titanium (III) phosphide is Ti3P. It consists of three titanium atoms bonded to one phosphorus atom.
Phosphorus(III) oxide has the formula P2O3 but it exists as the molecule of P4O6
The chemical formula for titanium(III) hydroxide is Ti(OH)3.
FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)