Protons
Electrons
Neutrons
All of the above are the same size.
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1 proton, 1 electron, 1 neutron
1 proton, 0 electrons, 1 neutron
1 proton, 1 electron, 0 neutrons
1 proton, 2 electrons, 1 neutron
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Calcium
Sodium
Aluminum
Both Sodium and Aluminum
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Metalloids
Transition Metals
Noble Gases
Halogens
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6
12
8
14
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(63+65) / 2
(65-63) / 2
(65 / 2) + (63 / 2)
(63 x 0.69) + (65 x 0.31)
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