chemical equations and reactions holt test key
ogen: +1 (except metal hydrides) Sum of oxidation states in a neutral compound: 0 Sum in an ion equals its charge Example: \[ \mathrm{Fe_2O_3} \] Oxygen: -2 Total for 3 oxygens: -6 Total for 2 Fe atoms: +6 Each Fe: +3 (oxidation state) Identifying Redox Processes Oxidation