Calcium has an atomic number of 20 and an atomic mass (weight) of 40 therefore, we know that calium has {}20 protons []40 protons {}20 electrons []40 electrons {}20 nuetrons !check all that apply!

Calcium has an atomic number of 20 and an atomic mass (weight) of 40 therefore, we know that calium has

{}20 protons
[]40 protons
{}20 electrons
[]40 electrons
{}20 nuetrons
!check all that apply!

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