[Q0]Is the only distinct difference between a particle and antiparticle the charge? Does it apply to Quarks Electron Proton Neutron(does it have a antiparticle???) Neutrinos. FCPs(do FCP have charge? well light doesn't but does a gluon...and whats the other one called not the graviton) [Q1] if neutrinos have no charge then how do they have antineutrinos? [Q2] Is the EM spectrum discretized(intervals) or can you create a EM wave of any wavelength/frequency you choose? [Q3]do mesons(q/^q) have fractional charges?