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 Iā€“ 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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