Question

give an activity to understand the implications of Rutherford's alpha scatterings experiment by a gold foil​

Answer 1

Answer:

Observations of Rutherford's scattering experiment:

As we can see in Fig. 1.

Most of the fast moving α-particles passed straight through the gold foil.

Some of the α-particles were deflected by the foil by small angles.

Surprisingly one out of every 12,000 alpha particles appeared to rebound.

Answer 2

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Q1. Give an activity to understand the implications of Rutherford's a scattering experiment by a gold foil.

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To understand the implications of Rutherford's a particle scattering experiment:

Activity: Let a chiľd stand in front of a wall with his eyes closed. Let him throw stones at the wall from a distance. He will hear sound for each strike of stone on the wall. This is like a nucleus of the atom. But if a blind-folded chíld has to throw stones at a barbed-wire fence, most of the stones would not hit the fencing and no sound would be heard.

This is because there are lots of gap in the fence which allows the stone to paśs through them. This is likè empty space in an atom through which a-particles will paśs through. Based on the above activity and similar reasoning Rutherford concluded the a-particle scattering experiment as:

• (1) Most of the space inside the atom is empty as a-particles paśsed through the foil.

• (2) Very few particles deflected from their path, this show that positive charge occupies lesś space.

• (3) A very small fraction of a-particles are deflected by 180°, this shows that all the positive charge and masś of the gold atom were concentrated in a very small volume within the atom.

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