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Describe Rutherford’s gold foil experiment. How did the

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 10E Chapter 2

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 10E

Describe Rutherford’s gold foil experiment. How did the experiment prove that the plumpudding model of the atom was wrong?

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Solution : The above figure illustrates the Millikan’s oil-drop experiment, which was used to measure the char ge of the electron. Small drops of oil were allowed to fall between electrica lly charged plates. The drops picked up extra electrons as a r esult of irradiation(process by which an object is exposed to radiation) by X-rays and they became egatively charged. M illikan m easured the varying voltage between the plates that affected the rate of fall. From these data he calculated the negative charge on the drops. Because the charge on any drop was always some integral multiple of 1.602×10 C, Millikan -19 deduced this value to be the charge of a single electron. (a) What causes their rate of fall to vary from their rate in the absence of an electric field In the absence of electric field the two opposing forces which are gravitational force (applying downwards) and frictio nal force (applying upward) that is applied on oil drop vary the rate of fall of the oil droplet. The charged oil droplet falls downwar d due to the g ravitational force. But the rate of its fall is varying due to the rictional...

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Chapter 2, Problem 10E is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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Describe Rutherford’s gold foil experiment. How did the