Which particle below has the smallest mass?
A)neutral pi-meson (pion)
B)neutral k-meson (kaon)
C)proton
D)neutron

Question

Quizplus · Accepted Answer

The neutral pi-meson (pion) has the smallest mass among the options listed. Pions are mesons, which are subatomic particles composed of one quark and one antiquark, and they are generally lighter than baryons (such as protons and neutrons) and other types of mesons like kaons.

Which Particle Below Has the Smallest Mass