Download Atoms are made up of We know that electrons move in orbitals

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Atoms are made up of
electrons
charge
-
mass 0.5 MeV/c2
protons
neutrons
+
0
938 MeV/c2
939.6 MeV/c2
note: 1 MeV/c2 = 1.8 x 10-30 kg = 8 x 10-30 lb
location atomic orbit nucleus
nucleus
(in the middle of atom)
We know that electrons move in
orbitals governed by wave functions
determined by quantum mechanics
What about the protons and neutrons?
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