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6 votes
6 votes
What is the number of protons plus the number of neutrons in the nucleus of an atom equivalent to?

A: average atomic mass
B: mass number
C: number of electrons
D: atomic number

User Okeydoke
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1 Answer

13 votes
13 votes

Answer:

b

Step-by-step explanation:

b/c proton + neutron=mass number and

mass number - proton= neutron

User Koshy
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