1 Feb 1859 Jahr - 1897 AD: In 1897, J.J Thompson demonstrated that atoms were made up of even smaller particles called electrons, which gave the atom a (-) charge through electric field experiments. His model of an atom was known as a raisin bun model and was an improvement of Dalton’s model, with added electrons.

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The history of the atomic model

ByKai

15 Okt 2017

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