WAEC Chemistry 2014 Theory — Question 12
Question 12 of 38 from the West African Examinations Council (WAEC) Chemistry 2014 Theory paper, with the correct answer and a full explanation.
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2(a). Define each of the following terms: (i) ion; (ii) isotopes.
Model answer
(i) An ion is an atom or group of atoms that possesses an electric charge (positive or negative). (ii) Isotopes are atoms of the same element with different relative atomic masses (i.e., atoms with the same number of protons but different numbers of neutrons).
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