Answer
Calcium must lose two electrons to achieve noble gas configuration.
Work Step by Step
An element must lose its valence electrons to achieve noble gas configuration. Calcium has two.
Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)
by Timberlake, Karen C.
Published by
Prentice Hall
ISBN 10:
0321908449
ISBN 13:
978-0-32190-844-5
Chapter 6 - Section 6.1 - Ions: Transfer of Electrons - Questions and Problems - Page 171: 6.1b
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