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Ions are atoms or molecules that have an electrical charge. Either + or -. Positive ions are often called cations while negatively charged ions are anions. For example, sodium in its elemental state has a positive charge and is notated as Na+ (the + shouild be superscripted). Chloride on the other hand is an anion and would be notated as Cl- (again with the supercript). These ions should look familiar as when they combine the form NaCl, or salt, which is not an ion as it has a neutral charge. The + charge and the - charge balanced and a stable compound was formed.

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12y ago
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12y ago

An atom is an ion if it carries a charge.

An atom carries a charge if it has more or less electrons than its neutral state (the same as its atomic number)

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