Which particle in the free state is least stable?
a. electron
c. photon
b. neutron
d. proton
Question 2
Baryons are composed of 3 quarks. If all 3-quark compositions of particles could happen, what would be the highest possible charge for such a particle?
a. There is no upper limit, though the charge is usually less than 3 e.
b. 2 e
c. 1 e
d. 3 e