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Chemistry Lecture Notes - September 6, 2006

Chemistry Lecture Notes - September 6, 2006 - Chemistry...

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Chemistry Lecture Notes September 6, 2006 Read from Chang: 3.1-3.3 View from Thinkwell – 3.2.1, 3.2.2 Work end of chapter problems: Ch. 2 – 57.60, 64, 66, 68, 69, 74, 90, 99 Naming Ionic Compounds Cont. Now that we know the names of the ions lets learn the rules for naming the ionic compounds. Name the cation followed by the anion. NaCl – sodium chloride (If it’s monoatomic) MgF2 – magnesium fluoride Note: you do not state that there are two fluorides Metal listed first, you are dealing with a monoatomic ion. Polyatomic: NH4MnO4 – ammonium permanganate Certain metals (especially transition metals) can have more than one cation (that is – charge) so designate the charge using a roman numeral after the metal name. Roman numeral – tells you the charge on the metal. FeCl 2 – iron (II) chloride Which metals don’t need roman numerals? The ones you need to know are the ones with the same charge no matter what 1A - +1 2A - +2
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