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: 59b

Answer

+2

Work Step by Step

$Ca:[Ar]4s^{2}$ The atomic number for argon is 18, which means there are $S=18$ electrons. $Z_{eff}$$=$$Z-S$$=20-18$$=+2$
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