Polyatomic Ions, Geometries, and Nomenclature

Ammonium
NH4+
Acetate
C2H3O2
Carbonate
CO32-
Cyanide
CN
Hydroxide
OH
Nitrate
NO3
Nitrite
NO2
Sulfate
SO42-
Sulfite
SO32-
Phosphite
PO33-
Phosphate
PO43-
Perchlorate
ClO4
Chlorate
ClO3
Permanganate
MnO4

Hydrogen Carbonate

(Bicarbonate)

HCO3
Dichromate
Cr2O72-

Electron: Linear

Molecular: Linear

Electron Groups: 2

Bonding Groups: 2

Lone Pairs: 0

Electron: Trigonal Planar

Molecular: Trigonal Planar

Electron Groups: 3

Bonding Groups: 3

Lone Pairs: 0

Electron: Trigonal Planar

Molecular: Bent

Electron Groups: 3

Bonding Groups: 2

Lone Pairs: 1

Electron: Tetrahedral

Molecular: Tretrahedral

Electron Groups: 4

Bonding Groups: 4

Lone Pairs: 0

Electron: Tetrahedral

Molecular: Trigonal Pyramidal

Electron Groups: 4

Bonding Groups: 3

Lone Pairs: 1

Electron: Tetrahedral

Molecular: Bent

Electron Groups: 4

Bonding Groups: 2

Lone Pairs: 2

Ionic
metal[metal #] + name-ide
Molecular
prefix-name + prefix-name-ide
Acids (Binary)
hydro-name-ic + acid
Acids (Oxyacids)

ate: name-ic + acid

ite: name-ous + acid

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