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Naming Ionic Compounds

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  1. Naming Ionic Compounds

  2. 1) Name the cation (metal) This one is always first in the formula. 2) Name the anion (nonmetal) **if it is a polyatomic ion write the name **if it is a single element change ending to ide

  3. Examples CaCl2 Calcium chloride Mg(NO3)2 Magnesium nitrate

  4. 3) If the formula has a star by it, then it will have a Roman numeral. To find the Roman numeral, undo the criss-cross. Go to the end of the formula and work backwards

  5. Examples FeCl3 Ask: where did that number, 3, come from? FeCl3 (Work backwards, uncross numbers) example: FeCl3 = Fe3+ Cl- FeCl3 is iron 3+ so the name is iron III chloride

  6. CuNO3 Copper (I) nitrate

  7. Worksheet Fe2S3 Fe+3 S-2 Iron III sulfide

  8. CaBr2 Ca+2 Br-1 Calcium bromide