Octet rule
When forming compiunds, atoms tend to achieve the electron configuration of a noble gas
Metal atoms tend to lose their valence electrons. Nonmetal atoms tend to gain electrons.
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Ionic compounds
Compounds composed of cations and anions
Ionic compounds are electrically neutral
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Ionic bonds
Electrostatic forces that hold ions together in ionic compounds
Most ionic compounds are crystalline solids at room temperature
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Ionic compounds generally have high melting points
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