Depends what you mean by "smaller."
The mass of a photon is smaller than even that of a neutrino.
At a sub-atomic level, concepts like "volume" or "size" become almost meaningless, so it is difficult to say whether the "size" of a neutrino is greater or less than that of, say, an electron.
No, photons are considered to be massless and travel at the speed of light, making them the lightest known particles.
Examples: proton, muon, boson Higgs, positron, antineutron, tau neutrino etc.
They aren't 3 they are in fact 12 if you count anti matter as a separate particle from matter. Electron, muon, tau, electron neutrino, muon neutrino and tau neutrino. The same apply to anti matter positron, anti muon, anti tau, postrin neutrino, anti muon neutrino, and anti tau neutrino.
The charge of a neutrino is neutral, meaning it has no electric charge.
As of current scientific understanding, quarks are considered to be the smallest known particles and cannot be divided into smaller parts.
I suppose that gluons are smaller because these particles are massless.
Yes, it has a mass - though the mass is quite small. As far as I know, the neutrino has not been found to have smaller parts.
No, photons are considered to be massless and travel at the speed of light, making them the lightest known particles.
Yes.
2.5 of anything is generally smaller than 50 of the same thing.
Well, Anything bigger than 180 but smaller than 360 .
Anything smaller than it.
Anything smaller than it.
anything smaller than the triangle
Examples: proton, muon, boson Higgs, positron, antineutron, tau neutrino etc.
No. 0.01172 anything compared to 1 of the same anything is smaller.
An antielectron neutrino is an antileptonic elementary particle - the antiparticle of an electron neutrino.