Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 2 - Atomic Structure and Interatomic Bonding - Questions and Problems - Page 48: 2.10

Answer

Argon and Xenon

Work Step by Step

The K+ ion is a Potassium atom that has lost one electron, mentioned by the plus charge, so it has the same electron configuration as Argon. The I– ion is an Iodine atom that has acquired one extra electron, mentioned by the negative charge; therefore, it has the same electron configuration as Xenon.
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