Chemistry: The Science in Context (4th Edition)

Published by W.W. Norton & Co.
ISBN 10: 0393124177
ISBN 13: 978-0-39312-417-0

Chapter 2 - Atoms, Molecules, and Ions: Matter Starts Here - Problems - Page 69: 26

Answer

Because Mendeleev based his periodic table on the reactivity of elements, he did not include the noble gases, which are chemically inert.

Work Step by Step

Because Mendeleev based his periodic table on the reactivity of elements, he did not include the noble gases, which are chemically inert.
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