Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 6 - Electronic Structure of Atoms - Exercises - Page 252: 6.67b

Answer

in a many-electron atom, the energy of an orbital increases with increasing value of $l$: $$ns\lt np\lt nd \lt nf$$

Work Step by Step

In a many-electron atom, due to the electron-electron repulsions, the energies of different subshells in a given shell are different according to the following rule: "In a many-electron atom, for a given value of $n$, the energy of an orbital increases with increasing value of $l$" In other words, in a many-electron atom, for a given value of $n$, we have the following orbitals in order of increasing energy $$ns\lt np\lt nd \lt nf$$
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