What is the size of an electron?
Curiously, this most common of atomic parts has only a fuzzy
estimate of size.
Linus Pauling says "The radius of the electron has not been
determined exactly, but it is known to be less than 1 X 10-13
So roughly the electron is 1/1000 the size of a proton. Maybe.
But a cooler answer is-- physicists are annoyed by the question. A
good case can be made for other sizes, even huge sizes....because
the properties of the electron OTHER than it's size are the ONLY
important ones. In fact the size of atomic pieces smaller than the
nucleus usually does not matter at all....and may in fact have no
meaning. After all, how do you propose to measure these guys?
The electron is known to be a point particle down to a limit of
10^-18m. It, as far as we know does not have a classical