Density values for e-, p+ and n

[delplace]

What are densities values for subatomic particles

 

[Redbelly98]

If you mean the standard mass-per-volume density, then there really aren't any. Density is pretty much only used when dealing with a collection of many particles.

If you wanted to come up with a number for protons and neutrons, try googling "radius of proton" and then divide the mass by the volume of a sphere of that radius. Buy I don't know why that would be a useful thing to do.