Jenn777
the atomic mass of an atom equals the sum of the masses
A) protons and electrons
B)electrons and neutrons
C)protons and neutrons
D)protons ONLY



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Jenn777
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help! :)

help123456
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protons and neutrons

Jenn777
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thanks1 :)

help123456
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np

musab_aljanabi
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protons+neutrons

Jenn777
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thankyou!

musab_aljanabi
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u r welcome ^_^

Jenn777
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;)