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Question

J.J. Thomson discovered _________ at the end of 19th century.

A
Electrons
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B
Nuclei
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C
Atoms
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D
Molecules
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Solution

The correct option is C Electrons
J.J. Thomson's discovery of the electron in 1897 showed us that the atom can be split into even smaller parts. His discovery was the first step towards a detailed model of the atom.

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