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Covalent Bond
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Atoms held together by sharing electrons
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Molecule
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A neutral group of atoms joined together by covalent bonds
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Diatomic molecule
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A molecule consisting of two atoms (HOFBrINCl)
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Molecular compound
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A compound composed of molecules
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Molecular formula
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Chemical formula of a molecular compound
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Single covalent bond
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Shares one pair of electrons
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Structural formula
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Represents the covalent bonds by dashes and shows the arrangement of covalently bonded atoms
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Unshared pair
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A pair of electrons that is not shared between atoms (a.k.a. lone pair or nonbonding pair)
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Double covalent bond
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Sharing of two pairs of electrons
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Triple covalent bonds
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Sharing of three pairs of electrons
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Coordinate Covalent Bonds
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A covalent bond in which one atom contributes both bonding electrons
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Polyatomic ion
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A tightly bound group of atoms that has a positive or negative charge and behaves as a unit.
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Polar Covalent Bond
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A covalent bond between atoms in which the electrons are shared unequally
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Nonpolar covalent bond
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Bonding electrons are shared equally
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Polar molecule
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One end of the molecule is slightly positive and the other end is slightly negative
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