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jan 1, 1897 - J.J. Thomson : His atomic model was called the 'Plum pudding'.He discovered about the electrons and he even noticed that an atom can be divided. He also said that aoms are made of positive cores and negatively charged particles within it.

Added to timeline:

10 Sep 2017
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Atomic Timeline

Date:

jan 1, 1897
Now
~ 121 years ago
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