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Chemistry 8.2 Vocab
Question | Answer |
---|---|
a bond formed when two atoms share a pair of electrons | Single covalent bond |
a chemical formula that shows the arrangement of atoms in a molecule or a polyatomic ion; each dash between a pair of atoms indicates a pair of shared electrons | Structural formula |
a pair of valence electrons that is not shared between atoms | Unshared pair |
a bond in which two atoms share two pairs of electrons | Double covalent bond |
a covalent bond in which three pairs of electrons are shared by two atoms | Triple covalent bond |
a covalent bond in which one atom contributes both bonding electrons | Coordinate covalent bond |
a tightly bound group of atoms that behaves as a unit and has a positive or negative charge | Polyatomic ion |
the energy required to break the bond between two covalently bonded atoms; this value is usually expressed in kJ per mol of substance | Bond dissociation energy |
one of the two or more equally valid electron dot structures of a molecule or polyatomic ion | Resonance structure |