Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises - Page 75: 2.18a

Answer

There would be fewer alpha particles deflected back.

Work Step by Step

Because beryllium has a lower density than gold, there is more empty space, and thus more space for particles to pass through without being deflected back.
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