Chemistry, asked by Sham9277, 11 months ago

The mass of an atom may be determined by adding the masses of the protons and neutrons in the nucleus and then subtracting the mass defect. Why is it unnecessary to include the electrons when determining the mass of an atom?

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Answered by Anonymous

the electrons determine the shape of elements and thereby its mass the attraction between nucleus and orbit electrons are included ......if I'm not wrong

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