6. Cations with multiple oxidation states ( transition metals ) are named with the metal name followed by a roman numeral representing the oxidation state and the word ion *Note: Silver is always +1, Cadmium and Zinc are always +2 : learn these transition metal exceptions!
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21. Elements Cation Anion Formula Magnesium and Oxygen Mg 2+ O 2- MgO Sodium and Nitrogen Na + N 3- Na 3 N Barium and Phosphorus Ba 2+ P 3- Ba 3 P 2 Aluminum and Bromine Al 3+ Br - AlBr 3 Tin (IV) and Sulfur Sn 4+ S 2- SnS 2
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27. Answers – Check your spelling! Elements Cation Anion Formula Name Magnesium and Oxygen Mg 2+ O 2- MgO Magnesium Oxide Sodium and Nitrogen Na + N 3- Na 3 N Sodium Nitride Barium and Phosphorus Ba 2+ P 3- Ba 3 P 2 Barium Phosphide Aluminum and Bromine Al 3+ Br - AlBr 3 Aluminum Bromide Tin (IV) and Sulfur Sn 4+ S 2- SnS 2 Tin (IV) Sulfide
28. Answers (spelling counts!): Formula Cation Anion Name ReS 3 Re 6+ S 2- Rhenium (VI) Sulfide CaS Ca 2+ S 2- Calcium Sulfide PbO Pb 2+ O 2- Lead(II) Oxide Ag 2 O Ag + O 2- Silver Oxide FeF 3 Fe 3+ F - Iron (III) Fluoride
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