Chemistry, 30.06.2020 01:01, zwbaby3693
31. The mass number of a nucleus is :
a) always less than its atomic number: b) the sum of the number of protons and neutrons present in
the nucleus; c) always more than the atomic weight; d) a fraction.
Answers: 1
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31. The mass number of a nucleus is :
a) always less than its atomic number: b) the sum of the numb...
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