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2 August, 04:50

Who propesed that an atom is a sphere with negative electrons

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  1. 2 August, 05:08
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    Thomson discovered negatively charged particles by cathode ray tube experiment in the year 1897. The particles were named electrons. J. J Thomson believed electrons to be two thousand times lighter than a proton. He assumed that an atom is composed of a cloud of negative charge in a sphere of positive charges
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