Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic - Page 376: 71



Work Step by Step

These are isoelectronic speices, which means they all have the same number of electrons. However, they have diffrent number of protons. Having fewer protons results in a lesser pull on the electrons and therefore, a larger radius. Therefore, an increase in the atomic number determines the order of the decreasing radii.
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