Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 2 - Self-Quiz: 1

Answer

[A] Hydrogen

Work Step by Step

Hydrogen is the first element on the Periodic Table, thus it only has one proton. The other choices are molecules without any specific amount of protons
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