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Ch.3 Ionic CompoundsWorksheetSee all chapters
All Chapters
Ch.1 Matter and Measurements
Ch.2 Atoms and the Periodic Table
Ch.3 Ionic Compounds
Ch.4 Molecular Compounds
Ch.5 Classification & Balancing of Chemical Reactions
Ch.6 Chemical Reactions & Quantities
Ch.7 Energy, Rate and Equilibrium
Ch.8 Gases, Liquids and Solids
Ch.9 Solutions
Ch.10 Acids and Bases
Ch.11 Nuclear Chemistry
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Periodic Table: Main Group Element Charges
Periodic Table: Transition Metal Charges
Periodic Trend: Ionic Radius (Simplified)
Periodic Trend: Ranking Ionic Radii
Periodic Trend: Ionization Energy (Simplified)
Periodic Trend: Electron Affinity (Simplified)
Ionic Bonding
Naming Monoatomic Cations
Naming Monoatomic Anions
Polyatomic Ions
Naming Ionic Compounds
Writing Formula Units of Ionic Compounds
Naming Ionic Hydrates
Naming Acids

A Formula Unit represents the simplest ratio of ions used to make an ionic compound.

Examining Formula Units

Concept #1: Formula Units

Concept #2: Rules for Writing Formula Units

Example #1: Provide the formula unit for the compound formed by the following ions: Mg2+ and SO42–

Practice: Provide the molecular formula for the following compound: Sodium dichromate