Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic: 47b

Answer

$Cu:[Ar]4s^{1}3d^{10}$ Therefore, there are ten 3d electrons.

Work Step by Step

Write the electron configuration for copper using noble gas notation. Then determine the number of electrons for the specified subshell. Note that copper is one of the excetion to the rule. Even though it is the ninth element of the 3d subshell, it borrows an electron from the 4s subshell to form a completely filled 3d subshell.
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