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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

What conclusions were made from the observations of Gold foil experiment?

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Question

What conclusions were made from the observations of Gold foil experiment?

Answer in Brief
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Solution

In Rutherford’s Alpha ray scattering experiment, the following conclusions were made from the observations.

  • Atom has a very small nucleus at the centre.
  • There is a large empty space around the nucleus.
  • The entire mass of an atom is concentrated in a very small positively charged region, which is called Nucleus.
  • The electrons are distributed in the vacant space around the nucleus.
  • The electrons move in circular paths around the nucleus.
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Chapter 11: Atomic Structure - Exercise [Page 138]

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Samacheer Kalvi Science [English] Class 9 TN Board
Chapter 11 Atomic Structure
Exercise | Q VIII. 1. | Page 138

RELATED QUESTIONS

Rutherford’s alpha-particle scattering experiment was responsible for the discovery of ______.


In Rutherford’s experiment, generally the thin foil of heavy atoms, like gold, platinum etc. have been used to be bombarded by the α-particles. If the thin foil of light atoms like aluminium etc. is used, what difference would be observed from the above results?


How was it shown that an atom has a lot of empty space within it?


(a) What is the nucleus of an atom and what is the nature of charge on it?

(b) Name the scientist who discovered the nucleus of atom.


Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom.


State true or false. If false, correct the statement.

In an atom, electrons revolve around the nucleus in fixed orbits.


Which of the following statements about Rutherford’s model of atom are correct?

(i) considered the nucleus as positively charged

(ii) established that the α–particles are four times as heavy as a hydrogen atom

(iii) can be compared to solar system

(iv) was in agreement with Thomson’s model


What were the drawbacks of Rutherford’s model of an atom?


Higher-Order Thinking skills: (HOTS)

In Rutherford's experiment of scattering alpha particles, can we take a foil of any other metal instead of gold?


The Rutherford α-particle experiment shows that most of the α-particles pass through almost unscattered. While some are scattered through large angles. What information does it give about the structure of the atom?


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