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Option 2 : J J Thomson
- J.J Thomson has proposed that an atom is electrically Neutral.
- J.J Thomson proposed the atomic theory that said the atom is a positively charged sphere and electrons are embedded in it.
- Hence in an atom, negative and positive charges are equal in magnitude, therefore, the atom is electrically neutral.
- J.J Thomson also discovered electrons in cathode ray experiment.
| Name | Theory |
|---|---|
| J.J. Thomson | proposed that atom is positively charged sphere with electrons embedded in it. |
| Ernest Rutherford | Atom has positively charged centre called the nucleus and electrons revolving around it in circular paths. |
| John Dalton |
Atom is indivisible. He is considered as the father of atomic theory. |
| Neils Bohr | Electrons revolve in discrete orbitals and while revolving in discrete orbital they do not lose energy. |
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