University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 41 - Quantum Mechanics II: Atomic Structure - Problems - Discussion Questions - Page 1401: Q41.14


See explanation.

Work Step by Step

Referring to table 41.3 as requested, gallium has the same electronic configuration as zinc, plus an extra electron that goes into the 4p subshell. The electron configuration of Ga is $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^1$. If one electron is taken away from neutral gallium, we return to zinc’s electronic configuration. The electron configuration of Ga+ is $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2$. If one electron is added to neutral gallium, the new electron is another 4p electron. The electron configuration of Ga- is $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^2$.
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