Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 8 - Self-Assessment Quiz: Q4

Answer

The correct answer is (d).

Work Step by Step

Vanadium has 23 electrons, which is 5 more than Argon. So first the configuration of Argon is completed, then 2 electrons go to the $4s$ orbital, and the remaining 3 electrons go to the $3d$ orbital. Following Pauli's exclusion principle, one electron each fills up in the $3d$ orbital sequentially. This is depicted in option (d).
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