Physics question 14 hw 21

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Which is false?

Jul 15th, 2015

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Ernest Rutherford was tpld to look for alpha particle scattering at large angles which came out to be true and contradicting with J J Thomsons model. Rutherford described it as the most incredible event of his life, "as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you."

Such huge deflections could not be explained by Thomson's model of the atom, where charge was distributed evenly throughout the atom. For such large deflections all the positive charge had to be concentrated in a small mass greater than the mass of the alpha particles.Its therefore not true that Plum  pudding model was approved

The correct answer is 4. The plum-pudding model was proven correct in experiments by Ernest Rutherford.

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Jul 15th, 2015

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Jul 15th, 2015
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