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why in atomic mass electron is not include while proton and
neutron include? although electron is a part of atom.
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Answer Posted / .l.
We emit electrons from mass calculations because an electron has a relative atomic mass of approximately 1/1836, whilst protons and neutrons both have relative atomic masses of 1. We do not include the masses of electrons because it would make such a small difference the the mass of the molecule being measured.
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