GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chadwick
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Thomson
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Rutherford
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Bohr
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Detailed explanation-1: -Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged “soup.” Rutherford’s gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.
Detailed explanation-2: -Thomson, who discovered the electron in 1897, proposed the plum pudding model of the atom in 1904 before the discovery of the atomic nucleus in order to include the electron in the atomic model. In Thomson’s model, the atom is composed of electrons (which Thomson still called “corpuscles, ‘’ though G. J. Q.
Detailed explanation-3: -This idea of tiny, indivisible bits of matter persisted until the 1800’s. John Dalton (1766-1844), a great chemist, really started the modern atomic hypothesis. His atom however was like a solid billiard ball.