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antibonding molecular orbital
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a molecular orbital that is of higher energy & lower stability than the atomic orbitals from which it was formed
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terms list
antibonding molecular orbital
a molecular orbital that is of higher energy & lower stability than the atomic orbitals from which it was formed
bond order
the difference between the number of electrons in bonding molecular orbitals and antibonding molecular orbitals, divided by two
bonding molecular orbital
a molecular orbital that is of lower energy and greater stability than the atomic orbitals from which it was formed
dipole moment
the product of charge and the distance between the charges in a molecule
homonuclear diatomic molecule
a diatomic molecule containing atoms of the same element
hybrid orbital
atomic orbital obtained when two or more nonequivalent orbitals of the same atom combine before covalent bond formation
hybridization
the process of mixing the atomic orbitals in an atom (usually the central atom) to generate a set of new atomic orbitals before covalent bond formation
molecular orbital
an orbital that results from the interaction of atomic orbitals of the bonding atoms
nonpolar molecule
a molecule that does not possess a dipole moment
pi bond
a covalent bond formed by sideways overlapping orbitals; its electron density is concentrated above and below the plane of the nuclei of the bonding atoms
pi molecular orbital
a molecular orbital in which the electron density is concentrated above and below the line joining the two nuclei of the bonding atoms
polar molecule
a molecule that possesses a dipole moment
sigma bond
a covalent bond formed by orbitals overlapping end-to-end; its electron density is concentrated between the nuclei of the bonding atoms
sigma molecular orbital
a molecular orbital in which the electron density is concentrated around a line between the two nuclei fo the bonding atoms
valence shell
the outermost electron-occupied shell of an atom, which holds the electrons that are usually involved in bonding
valance-shell electron-pair repulsion (VSEPR) model
a model that accounts for the geometrical arrangements of shared and unshared electron pairs around a central atom in terms of the repulsive forces between electron pairs
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