Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 4 - Section 4.7 - Trends in Periodic Properties - Understanding the Concepts - Page 130: 4.80c

Answer

Therefore sphere C is Kr.

Work Step by Step

These elements are found in different groups, but are located in the same period. Atomic size increases as you move down a group. Therefore, the size of Li < Na < K < Rb
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