Themes > Science > Physics > Atomic Physics > Atomic Structure > New System of the Atom > Particle Classification > The Basic Parts of the Atom

If we consider the three well-known particles:

 
PROTON NEUTRON ELECTRON
mass 1836 1838 1
charge + 1 0 - 1

we can see that the proton, which must be placed opposite the electron because of its charge, has a mass like the neutron's, almost exactly the same. Something is wrong with this classification that can't be fixed by a mere rearranging of the particles.

But replacing the proton with a neutron and an anti-electron gives us a more balanced arrangement.

 
ANTI-ELECTRON NEUTRON NEUTRON ELECTRON
mass - 1 1838 1838 1
charge + 1 0 0 - 1

And since these are listed by category, this is the same as:

 
ANTI-ELECTRON NEUTRON ELECTRON
mass - 1 1838 1
charge + 1 0 - 1

This leaves a neutron of relatively large mass between two oppositely-charged electrons of small mass.


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