The chemical formula of the compound formed between cobalt (III) and the bromide ion it would be CoBr3, if this compound exist !
Iron(III)Oxide
Nickel oxide is Ni(III)2O3, which does balance.
By rusting hydrated iron(III) oxide is formed.
Gold(III) chloride
Gold(III) chloride, traditionally called auric chloride, is a chemical compound
It is Ferrous chromate or Iron (II) chromate .
The compound AuF is Gold Fluoride.The correct formula is actually Au2F10
The chemical compound of iridium III chloride hexahydrate is IrCl3 * 6H2O. Iridium(III) chloride is an extremely rare inorganic compound.
If it existed it would be gold(II) oxide. The stable gold oxide is gold(III) oxide Au2O3
The chemical formula for the compound formed between iron(III) and iodine is FeI3 (iron(iii) iodide).
Gold(III) Iodide
Gold(III)Oxide is Au2O3
Cobalt(III) Chloride
Gold (III) nitrate has the formula Au(NO3)3.
organic compound
its gold(III) phosphide