Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 8 - Sections 8.1-8.9 - Exercises - Review Questions - Page 375: 26a

Answer

Atomic Radius Decreases.

Work Step by Step

As you move across a period, the number of protons and electrons increase, causing the attraction between the nucleus and electrons to be much greater. This causes the shell to go towards the nucleus causing the atomic radius to decrease.
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