Answer
(a) Carbon
(b) Oxygen
Work Step by Step
Carbon usually forms double bond with oxygen such as in aldehydes
O form double bond with another O atom to form O2 molecule
Chemistry: Principles and Practice (3rd Edition)
by Reger, Daniel L.; Goode, Scott R.; Ball, David W.
Published by
Cengage Learning
ISBN 10:
0534420125
ISBN 13:
978-0-53442-012-3
Chapter 20 - Chemistry of Hydrogen, Elements in Groups 3A through 6A, and the Noble Gases - Questions and Exercises - Exercises - Page 892: 20.30
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