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Level 42

Ionic Bonds & Nomenclature


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octet rule
a concept of chemical bonding theory that is based on the assumption that atoms tend to have either empty valance shells or full valence shells of eight electrons
ion
A charged atom
Cation
(+) Lose an electron
Anion
(-) Gain an electron
salt
An ionic compound made from the neutralization of an acid with a base.
lattice energy
the energy released when 1 mole of an ionic sompound is formed from gaseous ions
crystal lattice
a 3-D system of points designating the centers of components that make up the substance
unit cell
smallest repeating pattern of a lattice
Polyatomic Ion
A covalently bonded group of atoms that has a positive or negative charge and acts as a unit ex: sulfate (-2 charge)
Acetate
CH3COO?
Ammonium
NH4?
Carbonate
CO3-2
Chromate
CrO4-2
Cyanide
CN?
Dichromate
Cr2O7-2
Hydroxide
OH?
Nitrate
NO3?
Nitrite
NO2?
Permanganate
MnO4?
Peroxide
O2-2
Phosphate
PO4-3
Sulfate
SO4-2
Sulfite
SO3²?
Thiosulfate
S2O3²?