Explain Failure of Rutherford Model.
Answers
Explanation:
Its drawback is
On this model electron revolvs around the nucleus when the electron lose his charge then it fall on nucleus and atom will unstable
Explanation:
In this experiment a very thin gold foil is bombard by alpha-particles.
A stream of high energy alpha-particles from radioactive element, is bombard on a thin gold foil, foil has a circular fluorescent ZnS screen around it. Whenever alpha-particle after passing through gold foil, strikes to a ZnS circular screen. It produces a light. But results of scattering experiment were quite unexpected. It was observed that :-
* A small fraction of the alpha-particles was deflected by small angles.
* Most of the alpha-particles passing through gold foil undeflected.
* A very few alpha-particles bounded, were deflected by nearly 180°.
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→ On the basis of the above observations, Rutherford gave some conclusions :-
* As most of the alpha-particles passed through foil undeflected, it means most of the space of the gold atom is empty.
* A few positively alpha-particles were deflected because of a very small nuclear position of the gold atoms.
* By this Rutherford conclude that the volume occupied by the nucleus is very small as compared to the nucleus of an atom.
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→ On the basis of the above observations and conclusions, Rutherford proposed the structure of an atom :-
* Atom consists of two parts - Nuclear and Extra nuclear protons.
› Nuclear proton - Has nucleus or positive parts or protons.
› Extra nuclear proton - Has electrons or negative part.
* Nucleus is surrounded by electrons that move around the nucleus with a very high speed in circular path or orbits.
* Total positive charge of nucleus is equal to the total negative charge of electrons, in that atom. So, on atom is electrically neutral.