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The mass number of an isotope refers
to the

2 Answers

6 votes

Answer:

Mass number= protons(atomic number) + neutrons

It is the total number of nucleons present in an element

User Mathime
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4 votes

Answer:

sum of protons and neutrons in the nucleus of an atom

Step-by-step explanation:

Mass number=proton number + neutron number

User KNejad
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