19. What is an ion? Give two example
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an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
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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 charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. ... If the atom has more electrons than protons, it is a negative ion, or ANION. If it has more protons than electrons,it is a positive ion.For example, nitrate ion, NO3-,
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