What are ions ? How an atom become an ion ?

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Solution

Ions may be positive or negative. When an atom loses electrons it become positive ion, and when it gains electrons, it become negative ion.
For ex.,
Na after losing one electron becomes Na⁺ion and Cl gains one electron becomes Cl^- ion.

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Similar questions

When a metal atom becomes an ion __.

An ion has a charge whereas an atom does not. So what can an ion do that an atom can't. And also how does the ion do that ?

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