What is mass number?
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The mass number of a particular element can be defined as the number of protons and neutrons in the nucleus of an atom.
It is called mass number because it helps to calculate the atomic mass of an atom.
The mass number of an element also helps to differentiate between the different isotopes of the same element.
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the mass number of a particular element can be defined as the number of protons and neutrons in the nucleus of an atom
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