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atoms 1

neutrons protons electron atomic mass nucleus atomic #, mass #

QuestionAnswer
is th core of an atom nucleus
a positively part of the nucleus proton
a negatively charged part of the nucleus neutron
it is outside the nucleus and is almost zero electron
the number to the top left of a card on the periodic table atomic number
total number of protons and neutrons mass number
it is the amount of electrons outside the nucleus eletron cloud
total mass of protons and neutrons in an atom atomic mass
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