関連ワード:
is atomic mass number of protons is atomic mass the number of protons and electrons is atomic mass and number of protons the same is atomic mass equal to number of protons is atomic mass number of protons and neutrons is the relative atomic mass the number of protons and electrons is atomic mass protons is atomic mass protons plus electrons is the atomic mass the number of protons neutrons and electrons atomic mass is determined by the number of protons plus
