Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 7 - Periodic Properties of the Elements - Exercises: 7.19b

Answer

There are 2 differences between a nonbonding atomic radius and a bonding atomic radius: 1) A nonbonding atomic radius is half the distance between 2 nuclei of 2 nonbonding atoms when they come closest to each other, while a bonding atomic radius is half the distance between 2 nuclei of 2 bonding atoms in a compound. 2) A bonding atomic radius is smaller than a nonbonding atomic radius.

Work Step by Step

The differences between a nonbonding atomic radius and bonding atomic radius: 1) A nonbonding atomic radius is half the distance between 2 nuclei of 2 nonbonding atoms when they come closest to each other, while a bonding atomic radius is half the distance between 2 nuclei of 2 bonding atoms in a compound. The name has said it all. Nonbonding atomic radius is measured by the distance between 2 nonbonding atoms when they come closest to each other, and bonding atomic radius is measured from the bonding distance between 2 atoms in a compound. 2) A bonding atomic radius is smaller than a nonbonding atomic radius. The attraction between 2 atoms in a compound draws them closer to each other so that the bond can be maintained. At the same time, when 2 atoms that do not have enough attraction to create a bond approach each other, the electron-electron repulsion would soon push them further from each other. Therefore, the distance between 2 bonding atoms is smmaler than that between 2 nonbonding atoms, which is why a bonding atomic radius is smaller than a nonbonding atomic radius.
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