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atoms 1
neutrons protons electron atomic mass nucleus atomic #, mass #
Question | Answer |
---|---|
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 |