Answer
See the answer below.
Work Step by Step
Al, group 13, period 3
B, group 13, period 2
Na, group 1, period 3
K, group 1, period 4
C, group 4, period 2
Radius increase with period and decreases with group so:
$C\lt B\lt Al\lt Na\lt K$
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: 23
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