The mass number of an atom is?

a

the number of electrons in the atom

b

the number of protons in the nucleus of the atom

c

the number of neutrons in the nucleus of the atom

d

the sum of numbers of electrons and protons inthe atom

e

the sum of numbers of proton and neutrons in the nucleus of the atom

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e

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Discussions (3)

Son1
2 years ago

please the answer is B

Son1
2 years ago

please the is E not B it was a mistake

chichivee
2 months ago

E is highly incorrect please

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