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a bond formed when non-metal atoms share a pair of valence electrons to form a molecule.
the energy level, or shell, of an atom that contains the valence electrons.
the amount of energy required to break a specific bond or the energy released when a specific...
there are not enough electrons to contribute to an ordinary covalent bond.
a measure of the bond energy of a chemical bond. A large amount of energy is needed to break a...
rechargeable cells, such as the lead acid accumulator used in motor vehicles.