CHEMISTRY FACTS and FORMULAS TO REMEMBER FOR SOL

Group 16: 2-Group 17 (Halogens): 1-Groups 3-12: 1+/2+/3+ these are the transition metals; you must determine their charge by the ionic formula (the ratio of cations to anions); roman numeral in name refers to cation charge. Ex. FeCl Fe 1+ FeCl2 Fe 2+ FeCl3 Fe 3+ Iron I Chloride Iron II Chloride Iron III Chloride ................
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