Average Atomic Mass Calculator
https://www.omnicalculator.com/chemistry/average-atomic-mass
WEBJan 18, 2024 · The average atomic mass of an element is the average mass of all the isotopes of an element. As we know, the atomic mass of an element is approximately the sum of protons and neutrons present in the nucleus.In an atom, each proton and neutron contribute around one amu, and the electronic mass, being so small, is negligible, so the atomic mass is approximately equal to the mass number.
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