Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 8 - Periodic Relationships Among the Elements - Questions & Problems: 8.103

Answer

Please see the work below.

Work Step by Step

We know that a. Argon lacks reactivity b. After the discovery of argon, scientists started to work for discovering other such elements. c. We know that the atmosphere content of helium is very low which can not be detected easily.
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