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: 7.36a

Answer

The cation-anion distance is estimated to be as follows: $Li-F: 2.09$ angstrom $Na-Cl: 2.83$ angstrom $K-Br: 3.34$ angstrom $Rb-I:3.72$ angstrom

Work Step by Step

The ionic radii of $Li^+$ is $0.90$ angstrom. The ionic radii of $F^-$ is $1.19$ angstrom. The ionic radii of $Na^+$ is $1.16$ angstrom. The ionic radii of $Cl^-$ is $1.67$ angstrom. The ionic radii of $K^+$ is $1.52$ angstrom. The ionic radii of $Br^-$ is $1.82$ angstrom. The ionic radii of $Rb^+$ is $1.66$ angstrom. The ionic radii of $I^-$ is $2.06$ angstrom. Now, to estimate the cation-anion distance, we would take the sum of the ionic radii of 2 ions in the ionic compound. In detail, - $Li-F:0.90+1.19=2.09$ angstrom - $Na-Cl:1.16+1.67=2.83$ angstrom - $K-Br:1.52+1.82=3.34$ angstrom - $Rb-I:1.66+2.06=3.72$ angstrom
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.