Ionic naming: Transition metals Mr. Bimber Freedom High School

Warm up questions 1. MgO 2. Al 2 S 3 3. sodium nitride 4. calcium chloride 5. gallium selenide 1. Magnesium oxide 2. Aluminum sulfide 3. Na 3 N 4. CaCl 2 5. Ga 2 Se 3

Are you ready to learn?

Today you will learn: Which metals have more than one charge. Which metals have more than one charge. How to name them. How to name them. How to write formulas for them. How to write formulas for them.

The Big Picture Formulas are the words of chemistry. Formulas are the words of chemistry. We use ionic formulas the most in this class. We use ionic formulas the most in this class.

Naming is important: Theres only one correct name for any formula. Theres only one correct name for any formula. Only one formula for any chemical name. Only one formula for any chemical name. Mistakes can be deadly. Mistakes can be deadly.

Ionic Naming: transition metals If: If: The compound is ionic The compound is ionic And the metal has more than one possible charge… And the metal has more than one possible charge… Name the metal ion Name the metal ion Identify its charge with a Roman number in parenthesis (I, II, III, IV, V, VI, or VII). Identify its charge with a Roman number in parenthesis (I, II, III, IV, V, VI, or VII). Name the nonmetal ion. Name the nonmetal ion.

Some examples: PbO PbO CuCl 2 CuCl 2 FeSe FeSe MnO 2 MnO 2 Lead (II) oxide Lead (II) oxide Copper (II) chloride Copper (II) chloride Iron (II) selenide Iron (II) selenide Manganese (IV) oxide Manganese (IV) oxide

How to find a formula: 1. Write the symbols. 2. Change the Roman number into the metal charge. 3. Write the nonmetals charge. 4. Trade and drop the charge numbers. 5. Reduce if you can.

Find the formula of tin (IV) sulfide: 1. Write the symbols: 2. Write their charges: 3. Trade and drop: 4. Reduce if you can: 5. (Dont write ones) 1. Sn S 2. Sn +4 S Sn 2 S 4 4. Sn 1 S 2 5. SnS 2

Traps and Tips Only for ionic compounds. Only for ionic compounds. Only use Roman numbers if the metal has more than one charge. Only use Roman numbers if the metal has more than one charge. The number says the charge, not how many. The number says the charge, not how many. Memorize family charges. Memorize family charges. Check metals in d block and p block for multiple charges Check metals in d block and p block for multiple charges Look up charges until youre sure. Look up charges until youre sure.

Summary if the metal has more than one possible charge, use Roman numbers. if the metal has more than one possible charge, use Roman numbers. Check d-block and p-block metals. Check d-block and p-block metals. The number says the charge, not how many. The number says the charge, not how many.

Find the name or formula: Lead (IV) sulfide Lead (IV) sulfide Copper (I) nitride Copper (I) nitride Uranium (VI) fluoride Uranium (VI) fluoride Fe 2 O 3 Fe 2 O 3 CrCl 6 CrCl 6 AlBr 3 AlBr 3 PbS 2 PbS 2 Cu 3 N Cu 3 N UF 6 UF 6 Iron (III) oxide Iron (III) oxide Chromium (VI) chloride Chromium (VI) chloride Aluminum bromide Aluminum bromide