what is an ion ? given example
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When a stable atom gains or loses an electron, it becomes an ion. For example, when chlorine takes an electron from sodium, and sodium gives that electron to chlorine, they become ions and form NaCl.
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An ion is a chemical species with a net electric charge formed when a neutral atom or a group of atoms accepts or donates one or more electrons. Ions are of two types - cations and anions.
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