Chapter 4: Structure of the Atom

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Structure of Atom

Question:

What are the limitations of Rutherford’s model of the atom?

Answer:

Rutherford’s Model of an Atom:

Rutherford performed the Gold foil experiment in which the fast-moving alpha particles were made fall on the gold foil. Some of the alpha particles deflect at higher angles while some deflect at smaller angles and some went undeflected.

According to Rutherford’s model, the atom contains a nucleus at the center which is heavy and positively charged. The size of the nucleus is very small as compared to the size of the atom. The electron is a negatively charged particle that revolves around the nucleus. So, Rutherford discovered the nucleus.

Drawbacks of Rutherford’s model of an atom:

The major drawback is the unstability of the orbital revolution of an electron. If the electron moves around the nucleus at high speed, it will give up its energy and fall into the nucleus.


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