1.

Fundamental particles of an atom Name of Particle Position in the Atom Mass used for practical Purposes Proton  Nucleus 1 u  Electron  ....... 0  Neutron  ....... 1 u

Answer»
Name of Particle Position in the atom  Charge Mass Mass used practical Purpose
 Proton Inside the Nucleus Positive 1.00727 u  1 u
  Electron  outside the Nucleus negative 0.00548 u
  Neutron  Inside the nucleus

 Chargeless

 1.00866u 1 u


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