Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 28 - Quantum Mechanics of Atoms - General Problems - Page 828: 62

Answer

86

Work Step by Step

Limiting the principal quantum number to n=6 would cut off the Periodic Table right after radon (Rn), Z = 86. Francium, the element with Z=87, has a $7s^1$ electron. There would be 86 elements.
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