The mass number of a nucleus is (1) always less than its atomic number (2) always more than its atomic number (3) sometimes equal to its atomic number
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The mass number of a nucleus is (1) always less than its atomic number (2) always more than its atomic number (3) sometimes equal to its atomic number The mass number of a nucleus is (1) always less than its atomic number (2) always more than its atomic number (3) sometimes equal to its atomic [...]