1. Ionic Compounds Unit 6: Nomenclature - Part III Mrs. Callender

2. How do I name an ionic compound with a transition element? Lesson Essential Questions: How do I write a formula for an ionic compound with a transition element?

3. Writing Names of Binary Ionic Compounds with a transition element Ex. TiCl 4 1. Write the Name of the first element (cation) as is. 2. Change the ending of the second element (anion) to –ide. Titanium Chloride 3.Work backwards from the nonmetal to figure out what the charge of the cation is and that is the Roman Numeral that is used in the name. Overall charge needs to be zero. = 0 What charge can Ti be to give a overall net zero charge? What is the charge of the nonmetal? The cation charge is what is used for the Roman Numeral in the name. (IV) +4-4

4. Writing Names of Binary Ionic Compounds with a transition element Ex. Fe 2 S 3 1. Write the Name of the first element (cation) as is. 2. Change the ending of the second element (anion) to –ide. Iron Sulfide 3.Work backwards from the nonmetal to figure out what the charge of the cation is and that is the Roman Numeral that is used in the name. -2 Overall charge needs to be zero. = 0 What charge can Fe be to give a overall net zero charge? +6 What is the charge of the nonmetal? The cation charge is what is used for the Roman Numeral in the name. (III) +3+6/2 BUT…..this time there are two iron atoms so the +6 charge needs to be divided equally therefore each Fe will have a +3 charge. BUT….there are three S atoms therefore the overall charge is -2(3) which is a -6. -6

5. Writing Names of Polyatomic Ion Compounds with a transition element Ex. Ti(ClO 4 ) 2 1. Write the Name of the first element (cation) as is. 2. Write the name of polyatomic ion remembering NOT to change the ending.. Titanium Perchlorate 3.Work backwards from the anion to figure out what the charge of the cation is and that is the Roman Numeral that is used in the name. Overall charge needs to be zero. = 0 What charge can Ti be to give a overall net zero charge? What is the charge of the anion? The cation charge is what is used for the Roman Numeral in the name. (II) +2 -2

6. Writing Ionic Formulas containing transition elements. Ex. Copper (I) Chloride 1.Write the formula for the anion and cation including the charges. The Cation gets its’ charge from the Roman Numeral. Cu +1 Cl -1 2. Check to see if the charges are balanced. +1-1= Net charge of zero which means it is balanced. CuCl

7. Writing Ionic Formulas Containing Transition Elements Ex. Mercury (II) Nitrate 1.Write the formula for the anion and cation including the charges. Remember Cation gets its’ charge from the Roman Numeral. Hg +2 NO 3 -1 2. Check to see if the charges are balanced. +2-1= Net charge of +1 which means it is NOT balanced and will need a subscript and parenthesis. Not Balanced Hg(NO 3 ) 2 2