Polyatomic Ions and Naming

Hydroxide ion

OH^-

Nitrate ion

NO₃^-

Carbonate ion

CO₃^2-

Sulfate ion

SO₄^2-

Phosphate ion

PO₄^3-

Ammonium ion

NH₄⁺ (CATION)

Peroxide ion

O₂^2-

Nitrite ion

NO₂^-

Sulfite ion

SO_3^2-

Phosphite ion

PO₃^3-

Relationship between -ite and -ate

-ite has one less oxygen in the formula than -ate

Both -ite and -ate of the same compound have the same charge

What does an -ide suffix mean

It’s just the base single nonmetal

Ex: Oxide = O^2-

Aluminum charge

Al³⁺

Zinc charge

Zn²⁺

Silver charge

Ag⁺

Cadmium charge

Cd²⁺

Group 1 (1A) charges

1+

Group 2 (2A) charges

2+