Atomic Theory Timeline

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Across
  1. 4. Discovered the proton and that most of the atom is made of empty space
  2. 6. Heisenberg and I purposed our current model of the atom with electrons existing in clouds
Down
  1. 1. Coined the term atom, meaning indivisible in Greek
  2. 2. Discovered the electron
  3. 3. Discovered that electrons exist at different energy levels
  4. 5. The father of modern atomic theory