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History of the Atom

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Question 06

Which of the following properties of atom could be explained correctly by Thomson model of atom ?

(a) Overall neutrality of atom

(b) Spectra of hydrogen atom

(c) Posittion of elecrtons, protons and neutrons in atom

(d) Stabilityof atom

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Solution

J J Thomson, In 1898, proposed plum pudding, (raisin pudding or watermelon) model of atom. An important feature of this model is that the mass of the atom is assumed to be uniformly distributed over the atom. This model was able to explain the overall neutrality of the atom.

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