Question

in columns what is the difference in the atomic models of Thomson and Rutherford

Answer 1

Here is your answer..

1) THOMSON'S MODEL OF ATOM:-

=> According to Thomson's model of atom, an atom is a sphere of positive charge spread in it with negative charge i.e., electrons present in it.

=> It can be depicted as a watermelon or plum pudding with seeds embedded in it.Here, the red sweet part depicts positive charge and seeds depict the negative charge...

=> Although Thomson's model was able to explain the overall neutrality of an atom, but was not consistent to prove the later on experiments.

2) RUTHERFORD'S NUCLEAR MODEL OF ATOM:-

=> Rutherford carried off the alpha particle gold foil scattering experiment. It showed that when the gold foil is bombarded with alpha particle then it was observed that most of the alpha particles passed through the foil undeflected. This showed that atoms have spaces between them.

=> Some of the alpha rays got deflected with small angles. This showed that atom has positive charge spread all over it.

=> At last, only few alpha particles (1 in 20,000) rebounded back at an angle of 180°. This showed that there is presence of a very small area with positive charge (nucleus) in an atom.


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