1. Warm-up What are the rules for writing formulas when given a name?
When do you have to put roman numerals in parenthesis?
What number goes in parenthesis?
When do you change the ending of the anion?
Which always comes first, cation or anion?

2. Ionic Nomenclature and Formulas
Unit 5, Day 2

3. Some quick reminders Column 1 has a +1 charge Column 2 has a +2 charge
Silver has a +1 charge
Zinc has a +2 charge
Aluminum has a +3 charge
All other metals need their charges told in their names – with the charge in parenthesis

4. Given the following elements, write their formulas
Mg+2 and Cl-1 MgCl2 Ni+3 and S-2 Ni2S3 Na+1 and N-3 Na3N
Ca+2 and O-2
CaO
Al+3 and F-1
AlF3
Mn+1 and Br-1
MnBr

5. Given the following names, write their formulas
Calcium bromide CaBr2 Manganese (II) oxide MnO Sodium sulfate Na2SO4
Iron (I) Nitride Fe3N Ammonium sulfide (NH4)2S Magnesium fluoride MgF2

6. Given the following formulas, write their names
Ni2O Nickel (I) oxide CaSO4 Calcium sulfate Na3N Sodium nitride
Li2S Lithium sulfide PbF4 Lead (IV) fluoride Mg33(PO4)2 Magnesium phosphate