subatomic particles, particles smaller than and inside the atom, proton, positively charged particle inside the nucleus, neutron, particle inside the nucleus without a charge, electron , negatively charged particle located on the orbits around the nucleus, quark, 3 of them are inside each proton, neutron, and electron , nucleus, makes up 98% of the mass of the atom, positively charged, isotopes, atoms of the same element, with different numbers of neutrons, atomic number, tells you the number of protons in an element's atom, atomic mass, this number is the total protons and neutrons, strong force , holds the nucleus together .

Atomic Structure

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