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4 votes
LAST QUESTION HELPPPP!!!!

Which subatomic particles are used to calculate the mass number of an atom. Mark all that apply. *

protons

electrons

neutrons

2 Answers

3 votes
The correct anwser you are looking for is "protons and neutrons"
User Marcus P S
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6.4k points
5 votes
protons and neutrons that's it
User David Poole
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