Naming Ionic Compounds: Simple Ions and Polyatomic Ions

-ide

-ous

-ium

-ene

Metals and non-metals share electrons equally

Metals give electrons to non-metals, forming ions that stick together

Non-metals give electrons to metals, forming molecules

Metals and non-metals combine without transferring electrons

Write the non-metal name first, then the metal name

Write the metal name first, then the non-metal name with the ending changed to -ide

Write both names unchanged

Write the metal name first, then the non-metal name with the ending changed to -ate

SO4^2- (sulfate)

Na+ (sodium ion)

NO3^- (nitrate)

Cl^- (chloride ion)

-ate ions have fewer oxygen atoms than -ite ions

-ate ions have more oxygen atoms than -ite ions

-ate ions are always negatively charged, -ite ions are positively charged

-ate ions are found only in organic compounds