gchippewa81
gchippewa81
03.02.2021 • 
Chemistry

Calcium has an atomic number of 20 and an atomic mass (weight) of 40. Therefore, we know that calcium has 20 protons
40 protons
40 electrons
20 neutrons
20 electrons

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Calcium has an atomic number of 20 and an atomic mass (weight) of 40. Therefore, we know that calci

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