Answer
c). Calcium
d). Barium
Work Step by Step
These two elements can be found in the second column of the periodic table which is the alkaline metals
Introductory Chemistry (5th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
032191029X
ISBN 13:
978-0-32191-029-5
Chapter 4 - Atoms and Elements - Exercises - Problems - Page 122: 57
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