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After completing the gold foil experiment, Rutherford concluded that the size of the nucleus is very small compared to the size of the atom. This is because:

Option: 1

One out of every 12000 alpha particles deflected back after hitting the gold foil
 


Option: 2

Most of the alpha particles deflected back after hitting the gold foil
 


Option: 3

Some alpha particles were deflected by small angles

 


Option: 4

Very few of the alpha particles passed through the gold foil


Answers (1)

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The Correct Answer is One out of every 12000 alpha particles deflected back after hitting the gold foil.

Rutherford’s model says that an atom has a positively charged nucleus.

So, the sub-atomic particle present in the nucleus of an atom is a proton (which carries a positive charge).

 Important Points

Conclusion of Rutherford Model

Most of the space inside the atom is empty because most of the α-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 α-particles were deflected by 1800,indicating that all the positive charge and mass of the gold atom were concentrated in a very small volume within the atom.

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sudhir.kumar

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