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15 cards from this deck
1897
Ball of positive charge with negative electrons embedded in it
A few atoms thick
Positive
Most alpha particles passed straight through
Empty space
Nucleus
Nuclear model
Orbit nucleus at specific distances (energy levels/shells)
James Chadwick
0.10.10.1 nm or 1×10−101 \times 10^{-10}1×10−10 m
1×10−141 \times 10^{-14}1×10−14 m
Charge: +1+1+1, Mass: 111
Charge: 000, Mass: 111
Charge: −1-1−1, Mass: very small
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