CBSE Class 9 Answered
atomic mass and mass number are they same
Asked by Sarthak Katyal | 06 Feb, 2014, 09:12: AM
Expert Answer
Mass number is the number of protons and neutrons in an atom and it tells us about the mass of the atom in amu, or atomic mass units.
Atomic mass is the average mass of all the isotopes of a certain type.
Answered by | 06 Feb, 2014, 09:27: AM
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