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20 Cards in this Set

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chemical bond
mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together
octet rule
chemical compounds tend to form so that each atom, by gaining, losing, or sharing electrons, has an octet of electrons in its highest occupied energy level
ionic bond
the chemical bond resulting from electrical attraction between large numbers of cations and anions
covalent bond
a chemical bond reslting from the sharing of an electron pair between two atoms
polar covalent bond
a covalent bond in hwich the bonded atoms have an unequal attraction fro the shared electrons
non polar covalent bond
a covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge
bond energy
the energy required to break a chemical bond and form neutral isolated atoms
bond length
the distance between tow bonded atoms at their ninimum potential energy, that is, the average distance between tow bonded atoms
chemical formula
a formula that indicates the relative numbers of atoms of each kind in a chemical compund by using atomic symols and unmerical subscripts
diatomic molecule
a molecule containing only two atoms
Lewis structure
a formula in which atomic symbols represent nuclei and inner-shell electrons, dot-pairs or dashes between two atomic symbols represent electron pairs in covalent bonds, and dots adjacent to only one atomic symbol represent unshared electrons
lone pair
a pair of electrons that is not involved in bonding and hat belongs exclusively to one atom
molecule
a neutral group of atoms that are held together by covalent bonds
resonance
the bonding in molecules or ions taht cannot be correctly represented by a single Lewis structure
unshared pair
a pair of electrons that is not involved in bonding and that belongs exclusively to one atom
formula unit
the simplest collection of atoms from which an ionic compound's formula can be established
lattice energy
the energy released when one mole of an ionic crystalline compund is formed form gaseious ions
polyatomic ion
a charged group of covalently bonded atoms
ductility
the ablility of a substance to be drawn, pulled, or extruded through a small opening to produce a wire
malleablility
the ablility of a substance to be hammered or beaten into thin sheets