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  • Which of the following statements is not true about Thomson's atomic model?Option: 1 Electrons are embedded in a positively charged sph

Which of the following statements is not true about Thomson's atomic model?

Option: 1

Electrons are embedded in a positively charged sphere.
 


Option: 2

The overall charge of the atom is zero.

 


Option: 3

The electrons in the atom are stationary.

 


Option: 4

The model was proposed in the late 19th century.


Answers (1)

best_answer

Correct Option c) The electrons in the atom are stationary.

Thomson's atomic model, also known as the plum pudding model, was proposed by J.J. Thomson in 1904, which is in the early 20th century, not the late 19th century as mentioned in option (d). According to this model, the atom consists of a positively charged sphere, in which negatively charged electrons are embedded. The electrons are considered to be free to move within the sphere, but not stationary.

Thomson proposed this model based on his experiments with cathode rays, which showed that electrons were negatively charged particles. He believed that these electrons were distributed uniformly within the positively charged sphere of the atom, like plums in a pudding.

Thomson's model was significant in that it provided the first concrete evidence that atoms were not indivisible, as previously believed, but instead had internal structure. However, it was later replaced by Rutherford's nuclear model, which proposed that the positive charge in the atom was concentrated in a tiny nucleus at the center, while the electrons orbited around it.

In summary, option (c) is not true about Thomson's atomic model, as he believed that the electrons were not stationary, but free to move within the positively charged sphere of the atom. Also, option (d) is incorrect as the model was proposed in the early 20th century, not the late 19th century.


 

Posted by

shivangi.shekhar

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