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what is gold leaf experiment?
Rutherford bombarded a very thin leaf of the element gold with a stream of high speed positively charged particles.

He observed that most of the particles went right through the gold foil.  Very few bounced back and very few others were deflected.

This proved that:

  1. the atom had a dense but very small positive core
  2. the electrons were far away from the nucleus
  3. the electrons were separated from the nucleus by a lot of empty space


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