which type of charges are present in ions give one example
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An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.
Ex : Aluminum - Al 3+
Barium - Ba 2+
Bismuth - Bi 3+
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The ions of all the metal elements are cations. A negatively charged ion is known as anion. An anion is formed by the gain of one or more electrons by an atom. Example: A chlorine atom gains 1 electron to form a chloride ion, Cl–, which is an anion.
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