Al(ClO3)3 is the chemical formula of the ionic compound aluminum chlorate. Its structure consists of one positively charged aluminum ion surrounded by three negatively charged chlorate ions.
The oxidation state of the aluminum in aluminum chlorate is three, which means that the charge on the aluminum ion is positive three. Each chlorate ion has a charge of minus one, so the compound's overall charge is neutral. Each chlorate ion consists of one chlorine atom covalently bonded to three oxygen atoms, with one extra valence electron giving the ion its overall negative charge. The molecular weight of aluminum chlorate is 277.34, and its chemical formula is also sometimes written as AlCl3O9.