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Describe Rutherford's gold foil experiment and the results

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 3Q Chapter 4

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 3Q

Describe Rutherford's gold foil experiment and the results of that experiment. How did these results refute the plum pudding model of the atom?

Step-by-Step Solution:

Solution 3Q :

Step 1:

Rutherford's gold foil experiment :

In 1909, Ernest Rutherford, who had worked under Thomson and subscribed to his plum-pudding model, performed an experiment in an attempt to confirm Thomson’s model. This experiment was determined to find out the structure of an atom. The above figure illustrates the experiment. His experiment, employed - particles, proved it wrong instead. In the experiment, Rutherford directed the positively charged - particles at an ultrathin sheet of gold foil. These particles were to act as probes of the gold atoms’ structure.

Rutherford explained the results by postulating the nuclear model of the atom, in which most of the mass of each gold atom and all of its positive charge reside in a very small, extremely dense region which he called the nucleus. He postulated further that most of the volume of an atom is empty space in which electrons move around the nucleus. Subsequent experiments led to the discovery of positive particles (protons) and neutral particles (neutrons) in the nucleus. Thus, it was discovered that the atom is composed of electrons, protons, and neutrons.

 In the - scattering experiment, most of the particles passed through the foil were unscattered because they did not encounter the minute nucleus of any gold atom. Occasionally, however, an - particle came close to a gold nucleus. In such encounters, the repulsion between the highly positive charge of the gold nucleus and the positive charge of the - particle was strong enough to deflect the particle, as shown in Figure above.

Step 2 of 2

Chapter 4, Problem 3Q is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

The full step-by-step solution to problem: 3Q from chapter: 4 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Since the solution to 3Q from 4 chapter was answered, more than 346 students have viewed the full step-by-step answer. The answer to “Describe Rutherford's gold foil experiment and the results of that experiment. How did these results refute the plum pudding model of the atom?” is broken down into a number of easy to follow steps, and 23 words. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. This full solution covers the following key subjects: experiment, results, model, atom, foil. This expansive textbook survival guide covers 19 chapters, and 2045 solutions.

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Describe Rutherford's gold foil experiment and the results

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