Atomic Number, Atomic Mass and Mass Number

Atomic Mass Out of these the mass of electrons is infinitesimally small,hence negligible.The masses of neutrons and protons. is the mass of the atom.In day to day life we use the units as g or kg to measure mass.However the mass of neutrons and protons.being very small,such units cannot be employed. Check out us at: http://chemistry.tutorvista.com/inorganic-chemistry/atomic-mass-unit.html

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