Answer
See the answer below.
Work Step by Step
Ca, group 2, period 4
Sr, group 2, period 5
Rb, group 1, period 5
P, group 15, period 3
Ge, group 14, period 4
Radius increases with period and decreases with group so:
$P\lt Ge\lt Ca\lt Sr\lt Rb$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 7 The Structure of Atoms and Periodic Trends - Study Questions - Page 281a: 24
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