1. Naming Ionic Compounds Containing a Multivalent Metal

2. Transition Metals usually have more than one charge listed on the periodic table (i.e. can lose different number of electrons) Therefore you must use a Roman Numeral to indicate the charge. Naming Ionic Compounds Containing a Multivalent Metal

3. Commonly Used Roman Numerals Ionic ChargeRoman Numeral 1+ 2+ 3+ 4+ I II III IV

4. Commonly Used Transition Metals (don’t copy this slide) Element NameSymbolIonic chargesRoman numeral CopperCu1+, 2+I, II IronFe2+, 3+II, III LeadPb2+, 4+II, IV TinSn2+, 4+II, IV NickelNi2+, 3+II, III GoldAu1+, 3+I, III MercuryHg1+, 2+I, II SilverAg1+Not needed ZincZn2+Not needed

5. Rules for Naming Ionic Compounds Containing a Multivalent Metal Use same steps as previously learned (binary ionic compounds) Roman Numeral indicates the charge of the multivalent metal Include a Roman Numeral in name Use the Roman Numeral in the name to help determine the chemical formula

6. Examples 1) copper(I)chloride: Cu Cl formula: _______ 2) copper(II)chloride: Cu Cl formula: _______ 3) tin(IV)oxide: Sn O formula: _______ + - CuCl 2+- CuCl 2 4+2- SnO 2

7. Examples 4) PbO: - The lead ion could be Pb or Pb - but the oxide ion has to be O Therefore to balance out the charges… (ionic compounds are neutral), it must be Pb name is ________________ 2+ 4+ 2- 2+ lead (II) oxide

8. Examples 5) PbO 2 : name is ________________ lead (IV) oxide O 2- There are 2 oxygen ions. Therefore -4 charge So one lead ion must have a +4 charge so that the compound has no overall charge O 2- Pb 4+

9. You try… 6) SnBr 4 ________________ 7) SnBr 2 ________________ 8) Cu 3 N________________ 9) iron (III) oxide ________________ 10) nickel (II) phosphide ________________ tin (IV) bromide tin (II) bromide copper (I) nitride Fe 2 O 3 Ni 3 P 2

10. Homework Page 151 # 5c & 6ac Page 174 # 9ai, 10bef Finish ‘Ionic Compounds Worksheet’ Study for Ionic Compounds Practice Quiz (Tuesday)