Chapter 6 - Ionic and Molecular Compounds: Polyatomic ions

() = superscript -> subscript is normal

What are polyatomic ions? (Define)

A group of **covalently** bonded ions with **ionic charge**.

What nonmetals are often bonded?

P → Phosphorus

S → Sulfur

O → Oxygen

C → Carbon

N → Nitrogen

Usual charges?

1-,2-,3-

Name the 6 common polyatomic ions (element name).

Hydrogen(H), Nitrogen(N), Chlorine(Cl), Carbon(C), Sulfur(S), Phosphorus(P)

What ones do we memorize? (the weird/odd suffixes)

1. Hydroxide
2. Ammonium
3. Cyanide

Hydroxide formula

OH(-)

Ammonium formula

NH4(+)

Cyanide formula

CN(-)

What ones do we memorize? (the ‘ates’)

1. Nitrate
2. Chlorate
3. Carbonate
4. Sulfate
5. Phosphate
6. Perchlorate
7. Acetate

Nitrate formula

NO3(-)

Chlorate formula

ClO3(-)

Carbonate formula

CO3(2-)

Sulfate formula

SO4(2-)

Phosphate formula

PO4(3-)

Perchlorate formula

ClO4(-)

Acetate formula

C2H3O2(-)

What ones do we memorize? (the ‘ites’)

1. Chlorite
2. Hypochlorite
3. Phosphite
4. Nitrite
5. Sulfite

Chlorite

ClO2(-)

Hypochlorite

ClO(-)

Phosphite

PO3(3-)

Nitrite

NO2(-)

Sulfite

SO3(2-)

What ones do we memorize? (the hydrogens)

1. Hydrogen Carbonate (Bicarbonate)
2. Hydrogen Sulfate (Bisulfate)
3. Hydrogen Sulfite (Bisulfite)
4. Hydrogen Phosphate
5. Dihydrogen Phosphate

Hydrogen Carbonate (Bicarbonate)

HCO3(-)

Hydrogen Sulfate (Bisulfate)

HSO4(-)

Hydrogen Sulfite (Bisulfite)

HSO3(-)

Hydrogen Phosphate

HPO4(2-)

Dihydrogen Phosphate

H2PO4(-)