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  • Which of the following is not true about Rutherford model?Option: 1 This model was based on circular motion theory and Planck's quantisation.

Which of the following is not true about Rutherford model?

Option: 1

This model was based on circular motion theory and Planck's quantisation.


Option: 2

Rutherford failed to explain the line spectrum.


Option: 3

Rutherford experiment gives an idea about the size of the nucleus.


Option: 4

Rutherford model explains the Zeeman effect.


Answers (1)

best_answer

 

Rutherford atomic models and their limitations -

Rutherford atomic models 

  1. Most of the part of the atom is empty and atom is spherical in shape.

  2. Each atom consists of a small, heavy, positively charged portion located at the centre, known as nucleus.

  3. All positive charge of atom (i.e protons) are present in nucleus and electrons are distributed in extra nuclear part of atom.

  4. Since the atom being electrically neutral, the number of protons in the nucleus is equal to the number of electrons in extra nuclear part.

Limitations

  1. The position of the electron was not mentioned.

  2. The stability of the atom was not explained.

  3. Line spectrum cannot be explained.

-

 

As we learnt

Rutherford’s atomic model -

Mass of atom is concentrated at its centre (nucleus) and electrons revolves around nucleus.

-

Rutherford model failed to explain Zeeman effect.

Zeeman effect is the splitting of spectral lines into several components in magnetic effect.

Therefore, Option(3) is correct

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