L2 Fundamental Particles and Interactions Essential Pre-Uni Physics L2.1 A. Leptons Essential Pre-Uni Physics L2.2 A. Up Down Down Essential Pre-Uni Physics L2.3 A. Beta - Essential Pre-Uni Physics L2.4 A. +1 Essential Pre-Uni Physics L2.5 A. A particle containing 3 quarks Essential Pre-Uni Physics L2.6 A. In Strong, Weak and Electromagnetic interactions Essential Pre-Uni Physics L2.7 A. Photon Essential Pre-Uni Physics L2.8 A. The same Essential Pre-Uni Physics L2.9 A. + 1/3 Essential Pre-Uni Physics L2.10 A. -1