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| 1. | Also called polar valence. the valence of an ion, equal to the number of positive or negative charges acquired by an atom through a loss or gain of electrons. |
| 2. | Also called electrovalent bond. ionic bond. |
| the electrostatic bond between two ions formed through the transfer of one or more electrons. |
A chemical bond in which one atom gives up an electron to another, thereby generating an electrical force that holds the atoms together.
Note: Many crystals are held together by ionic bonds.