science time

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Across
  1. 1. electrons found in the outermost energy level
  2. 3. radius the amount of space between the nucleus and the electron cloud
  3. 6. The pull of oppositely charged particles
  4. 7. the effect of decreased nuclear pull due to filled energy levels
Down
  1. 2. Negative particles that surround the nucleus
  2. 4. a region of space where an electron is most likely to be found
  3. 5. a positive charged particle in the nucleus