Answer
d. protons and neutrons
Work Step by Step
The atomic mass of an atom most closely approximates the sum of the masses of all its protons and neutrons.
Electrons have barely any mass compared to protons and neutrons.
Microbiology with Diseases by Body System (4th Edition)
by Bauman, Robert W,, PhD
Published by
Benjamin Cummings
ISBN 10:
032191855X
ISBN 13:
978-0-32191-855-0
Chapter 2 - The Chemistry of Microbiology - Questions For Review - Multiple Choice - Page 53: 2
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