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an electron pair in which each atom provides one electron for the bonding pair.
no atoms are gained or lost during a chemical reactions.
the radius of an atom from the nucleus to the outermost electrons.
(also called dative covalent bond) one atom contributes both electrons (or a lone pair of...
forms ions (either by breaking a crystal lattice up or by a chemical reaction).
temperature at which a substance changes phase from a liquid to a solid at a specific or fixed...