Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 14 - Problems - Page 610: 14.19


See explanation below.

Work Step by Step

This answer can be found in the reading. Group 3A elements have largest atomic radii and smallest atomic mass in corresponding periods. That's why group 3A elements have low densities.
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