symbol of Iron(III) hydroxide

The formula (chemical formula) of iron(III) hydroxide is Fe(OH)3, but not the symbol (chemical symbol).

There is a symbol (chemical symbol) for each ELEMENT. For example, the symbols of iron, oxygen and hydroxide are Fe, O and H respectively. The chemical formula of a substance is a representation of the substance by using symbols and numbers (if necessary).

Fe(OH)3係chemical formula ，chemical symbol 就唔係咁ga，例如: Iron 係Fe, Hydrogen係H，Oxygen係O，即係原素表個d