2 points
If an element has 20 protons, 20 electrons and 20 neutrons, what is the
atomic numbe...
Chemistry, 15.01.2021 21:10 ejuarez2020
2 points
If an element has 20 protons, 20 electrons and 20 neutrons, what is the
atomic number of this element?
Answers: 2
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Answers: 2
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Answers: 2
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