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Ionic Bonds

An ionic bond is a chemical bond between a nonmetal ion and a metal ion of opposite charges. Ionic bonds are formed when the metal ion donates one or more electrons to the nonmetal ion, and their opposite charges attract one another to form a bond.

The combination of an anion and a cation forms an ion, where an ion of a single atom is called a monatomic ion and an ion of two or more atoms is called a polyatomic ion.

The charges of an ion are indicated with a “+” or “-” and are shown in the chemical formula of the ion. An ion of “X+” where X is a number, means the ion has X less electrons., and an ion of “X-” means the ion has an excess of X electrons.

You can tell what kind of bonding you have based on the differences in electronegativity: >0.5 is covalent, 0.5

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