How do you determine the formula for aluminium hydroxide?
"Criss-cross" the charges of each atom because it is an ionic compound. This will get you
Aluminum has a chemical symbol of
Hydroxide is a molecule consisting of two elements - hydrogen and oxygen. The chemical formula for hydroxide is
Aluminum is the cation, while hydroxide is the anion, thus we get
The 1 is redundant so we don't write it in.
Hope this helps :)