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 - Problems - Page 827: 26

Answer

a. $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}5s^1$ b. $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}4f^{14}5s^25p^65d^{10}6s^1$ c. $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}4f^{14}5s^2 5p^6 5d^{10} 5f^3 6s^2 6p^6 6d^1 7s^2$

Work Step by Step

We write the configurations with the subshells in principal number order (e.g., 3d before 4s, as in Table 28–4). a. Silver has Z = 47. $$1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}5s^1$$ b. Gold has Z = 79. $$1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}4f^{14}5s^25p^65d^{10}6s^1$$ c. Uranium has Z = 92. $$1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10}4f^{14}5s^2 5p^6 5d^{10} 5f^3 6s^2 6p^6 6d^1 7s^2$$
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