How much does subatomic particles such as photons, tachyons, and electron being the biggest particles etc. occupy space? If put in a ball how big of a ball would that be?
closed as too broad by Glorfindel, Chappo Says Reinstate Monica, Mike G, Mick, Rory Alsop Nov 22 '18 at 17:09
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First things first ...
These are entirely hypothetical and no evidence for them exists.
How much does subatomic particles such as photons,
tachyons, and electron being the biggest particles etc. occupy space?
How long is a piece of string ?
There's no simple answer to what size an elementary particle is. You can view them, depending on context, as having no size (point like) or being spread all over space (wave distribution).
We can't say how many free particles there are (i.e. particles not bound to other particles).
This is a lot more complicated by the current mainstream thinking that dark matter and dark energy make up most of the mass/energy content of the universe. Whatever dark matter may be, if it turns out to be a particle or particles we don't know about yet (quite likely on existing evidence) then those particles will almost certainly exist as free particles (only gravitationally bound together) as current thinking is that dark matter does not interact much at all with other matter or itself. And we have no idea what dark energy could be. So with most of the mass/energy is in forms we cannot identify we can't really say anything much about what you're asking.
A very, very, very rough estimate on the amount of dark matter is about 25% of the mass-energy of the universe.
If put in a ball how big of a ball would that be?
In a ball it would be (possibly) a huge black hole comprising anywhere from 25% to 95% of the mass-energy of the universe. I won't even bother estimating the size of the event horizon as it's just a useless number.
However "how big a ball" could equally mean it was, as it is now, spread out over the entire universe. So a perfectly correct answer is - universe sized.
Sadly, your question has no meaning unless you both posit a finite size for the particles (unlikely) and some magical way to defeat all 3 of the E-M, strong, and weak nuclear forces. Otherwise you don't even define how "closely" the particles could be placed. That's pretty much what StephenG is alluding to when he suggests a black hole -- the black hole itself has undefined dimension; the event horizon would pointless.