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Whelan Whelan
wrote...
Posts: 3158
8 years ago
The mass number of an atom is equal to the number of
A) electrons.
B) neutrons.
C) protons.
D) protons plus neutrons.
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
Author:
Read 320 times
1 Reply
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Answer verified by a subject expert
hbutler2hbutler2
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Posts: 3075
8 years ago
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Whelan Author
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8 years ago
You make an excellent tutor!
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This calls for a celebration Person Raising Both Hands in Celebration
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Thanks for your help!!
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