Ionic Compounds

Main-group ionic: Metal name + nonmetal with -ide suffix (e.g., NaCl = sodium chloride).
Transition metals: Use Roman numerals for charge (e.g., FeCl₃ = iron(III) chloride).
With polyatomic ions: Name the cation + polyatomic ion name (e.g., CaSO₄ = calcium sulfate).

Covalent Compounds

Prefixes: mono-, di-, tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-.
First element: use prefix only if more than one atom (no mono- on first element).
Second element: always use prefix + -ide suffix (e.g., CO₂ = carbon dioxide).

Acids

Binary acids (no oxygen): hydro- + root + -ic acid (e.g., HCl = hydrochloric acid).
Oxyacids (-ate ion): root + -ic acid (e.g., HNO₃ = nitric acid).
Oxyacids (-ite ion): root + -ous acid (e.g., HNO₂ = nitrous acid).

Naming Compounds

Name ionic, covalent, and acid compounds from their formula, or identify the formula from the name.

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