Answer
See explanation below.
Work Step by Step
a) CaO because oxygen is a smaller size than Sulfur.
b) SrO because Sr has a smaller radius size than Ba.
Chemistry: The Molecular Nature of Matter and Change 7th Edition
by Silberberg, Martin; Amateis, Patricia
Published by
McGraw-Hill Education
ISBN 10:
007351117X
ISBN 13:
978-0-07351-117-7
Chapter 9 - Problems - Page 390: 9.27
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