How much energy in MeV is released to form one atom of 102PB from protons, electrons, and neutrons if the nucleus has a mass of 101.905634 amu? The masses of the proton, electron and neutron are 1.00728 amu, 0.000549 amu and 1.00867 amu, respectively. 1.602x10-13 J = 1 MeV; 1 amu = 1.66054x10-27 kg

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.