Decision Tree for Nomenclature

Isthere

an oxygen?

Poly-atomiccation?

Isthere

a metal?

Metal withvariable charge?

Is the �rst element H+?(and it’s aqueous)

3+elements?

Yes/

Oxoacid Naming

-for polyatomic ions ending in -ite: [(anion root)(-ous acid)] -for polyatomic ions ending in -ate: [(anion root)(-ic acid)]Hydracid Naming

[(hydro-)(anion root)(-ic acid)]Type I Naming (ions with unique charge) [cation] [anion]

Type II Naming (metal ions with variable charge)

[(cation)(charge as Roman numerals in parentheses)] [anion]

Type III Naming (covalent molecules)

[(# pre�x if >1)(1st element)] [(# pre�x)(2nd element root)(-ide)]

Elemental Anions

[(element root)(-ide)]