Subject: ould a pool of electrons reflect ALL frequancies of radiation?

I looked through the archived answers, and couldn't find anything even close to
answering my question. I hope i'm not blind or anything ;)

So:
Let's say, that somehow, electrons were to be densely packed on the 
surface of
an insulator such as glass, or anything else (its just important that 
the
surface doesn't aborb the electrons). 
Now, if photons were shot at this pool of electrons, will the photons 
reflect
off of the electrons as they do during compton scattering? Also, does 
the
frequancy of those photons affect the ability of the electrons to 
reflect them
as would the frequancy of the photons affect the ability of a 
conducting surface
reflect them? 
I ask this because I have read that in order for a surface to reflect 
radiation,
it must be a few times bigger than the wavelength. For one, i don't 
understand
why this must be. Also, the photons still reflect off of the electrons 
and
nuclei, so how would those electrons or nuclei 'know' if the wavelength 
is
smaller than the length of all the reflecting things?

-Roman

Re: ould a pool of electrons reflect ALL frequancies of radiation?