ions and ionic bonding
Ions: Atoms that gain or lose electrons.
Lose → positive ion (cation)
Gain → negative ion (anion)
Ionic bonding: A metal gives electrons to a non-metal. The opposite charges attract.Example: Na⁺ + Cl⁻ → NaCl
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Ions: Atoms that gain or lose electrons.
Lose → positive ion (cation)
Gain → negative ion (anion)
Ionic bonding: A metal gives electrons to a non-metal. The opposite charges attract.Example: Na⁺ + Cl⁻ → NaCl