Compounds: Polyatomic Ions
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Ions formed when molecules lose or gain electrons are called polyatomic ions. When a molecule gains one or more electrons, it forms a negative polyatomic ion; when a molecule loses one or more... (more info)

Ions formed when molecules lose or gain electrons are called polyatomic ions. When a molecule gains one or more electrons, it forms a negative polyatomic ion; when a molecule loses one or more electrons, it forms a positive polyatomic ion.

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