Polyatomic Ions (Chem quiz)

Ammonium

NH4^+

Acetate

C2H3O2^-

Amide

NH^-

Cyanide

CN^-

Hydroxide

OH^-

Thiocyanate

SCN^-

Permanganate

MnO4^-

Nitrate

NO3^-

Nitrite

NO2^-

Hydrogen carbonate (bicarbonate)

HCO3^-

Hydrogen Sulfate (bisulfate)

HSO4^-

Dihydrogen phosphate

H2 PO4^-

Hypochlorite

ClO^-

Chlorite

ClO2^-

Chlorate

ClO3^-

Percholate

ClO4^-

Carbonate

CO3^-2

Chromate

CrO4^-2

Dichromate

Cr2O7^-2

Oxalate

C2O4^-2

Peroxide

O2^-2

Sulfate

SO4^-2

Sulfite

SO3^-2

Thiosulfate

S2O3^-2

Hydrogen Phosphate

HPO4^-2

Borate

BO3^-3

Phosphate

PO4^-3

Hydrogen Effect

Every time you add a hydrogen ion to a polyatomic ion, you reduce the negative charge by exactly 1

Phosphate —> PO4^-3

Hydrogen Phosphate —> HPO4^-2

Dihydrogen Phosphate —> H2PO4^-

Hypochlorite effect

hypochlorite —> ClO^-

chlorite —> ClO2^-

chlorate —> ClO3^-

perchlorate —> ClO4^-

Ate and Ite

ate anions have one more oxygen than the ite ion, but the same charge (memorize the ate ions)

Naming Ionic

Metal/Nonmetal:

name of cation + base name of anion-ide (CaI2 -—> calcium iodide)

Transition Metals:

name of cation + charge of cation in roman numerals + base name of anion -ide (FeCl3 —> iron (III) chloride)

Moleculer/Covalent

prefix + 1st element + prefix + 2nd element-ide

P2O5 —> diphosphorus pentoxide

Binary Acids

hydro + base name of nonmetal -ic + acid

Oxyacids

-ate of polyatomic—> ic

-ite of polyatomic —> ous

acid at the end