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IONS Atoms are neutral because the protons which arepositive <strong>and</strong> electron that are negative balance outthe charge, so there are same numbers of protons<strong>and</strong> electrons in an atom An ion is an atom or group of atoms that has apositive or negative charge Ion is formed by losing one or more electrons orgain one or more electrons from their highestoccupied energy levels There are two forms of ion, cation <strong>and</strong> anion.
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