Chemistry: The Central Science (13th Edition)

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

Chapter 6 - Electronic Structure of Atoms - Exercises: 6.36b

Answer

The hydrogen atom expands as it moves from its ground state to an excited state.

Work Step by Step

A hydrogen atom is made up of the nucleus and an electron surrounding it. That an electron moves from the ground state to the excited state means it will jump to a higher-energy state, which is further from the nucleus than the ground state. Therefore, the hydrogen atom will expand.
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