Question

When an atom loses or grain electron,it becomes a charged particle​

Answer 1

If the number of electrons changes, the atom becomes a charged particle and is called an ion. When one atom gains an electron some other atom must lose an electron. Ions are always produced in pairs, one positive and the other negative

Answer 2

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If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.