Explanation Given info: The radius of hydrogen atom is 5.3 × 10 − 11 m , the diameter of nucleus of hydrogen atom is 1.0 × 10 − 15 m . The formula to calculate radius of nucleus of hydrogen atom is, r = d 2 Here, r is the radius of nucleus. d is the diameter of nucleus. Substitute 1.0 × 10 − 15 m for d in the above equation to find r . r = 1.0 × 10 − 15 m 2 = 0.5 × 10 − 15 m The formula to calculate volume of sphere is, V = 4 3 π r 3 Here, V is the volume of sphere. r is the radius of sphere. Substitute 5.3 × 10 − 11 m for r and 3.14 for π in equation (1) to calculate volume of hydrogen atom. V = 4 3 × 3.14 × ( 5.3 × 10 − 11 m ) 3 = 6.23 × 10 − 31 m 3 Substitute 1.0 × 10 − 15 m for r and 3

5th Edition

ISBN: 8220103026918

Author: Walker

Publisher: PEARSON

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways:

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Chapter 31, Problem 1PCE

To determine

The fraction of volume occupied by nucleus in the hydrogen atom.

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Chapter 31, Problem 9CQ

Chapter 31, Problem 2PCE

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