Chemistry

Chemistry

Problem

The table below shows the mass and electric charge for the three subatomic particles which, for many decades, were thought to be the smallest parts of an atom.
ParticleMass (kg)Charge (coulombs)
electron9.109 383 56×10−319.109\,383\,56 \times 10^{-31}−1.602 176 620 8×10−19-1.602\,176\,620\,8 \times 10^{-19}
proton1.672 621 898×10−271.672\,621\,898 \times 10^{-27}+1.602 176 620 8×10−19+1.602\,176\,620\,8 \times 10^{-19}
neutron1.674 927 471×10−271.674\,927\,471 \times 10^{-27}0

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