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A-LEVEL Exam A-LEVEL Physics
3.2.1.2 Stable and unstable nuclei
3.2.1.3 Particles antiparticles and photons
3.2.1.4 Particle interactions
3.2.1.5 Classification of particles
3.2.1.6 Quarks and antiquarks
3.2.1.7 Applications of conservation laws
3.2.2.2 Collisions of electrons with atoms
3.2.2.3 Energy levels and photon emission
3.2.2.4 Wave-particle duality