Describe Rutherford\'s experiment by completing these phrases: Rutherford aimed

Question

Describe Rutherford's experiment by completing these phrases: Rutherford aimed particles at thin foil. b. He predicted of them would pass through the foil. c. Some bounced back, so he concluded there must be a. Describe what Rutherford's observed that showed him the nucleus is: tiny positive massive (i.e. contains most of the mass of the atom) Physicists understood the orbiting electrons in Rutherford's atom posed a theoretical problem. What do we expect accelerating electrons to do, and why would that be a problem for physicists?

Explanation / Answer

1. a.Rutherford aimed alpha particles at thin gold foil.

     b. He predicted most of the fast moving -particles of them would pass through the foil.

     c.some bounced back ,so he conculded there must be a positive charge of the atom occupies very little space.

2.Most of the space inside the atom is empty because most of the -particles passed through the gold foil without getting deflected. Very few particles were deflected from their path, indicating that the positive charge of the atom occupies very little space. A very small fraction of -particles were deflected by very large angles, indicating that all the positive charge and mass of the gold atom were concentrated in a very small volume within the atom.From the data he also calculated that the radius of the nucleus is about 105 times less than the radius of the atom.

On the basis of his experiment, Rutherford put forward the model of an atom, which had the following features:

Rutherford's alpha particle scattering experiment shows the presence of nucleus in the atom.

It also gives the following important information about the nucleus of an atom:

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