Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 31 - Think and Explain: 37

Answer

It takes much more energy to eject a proton.

Work Step by Step

Protons are buried deep within atoms. To remove a proton, i.e., "split an atom", takes many times more energy than to remove an electron, i.e., to ionize an atom.
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