Scattering
Link straight and backward α paths to atomic structure.
← Topic 11
Structured practice
Nuclide
Find neutrons in ²⁷₁₃Al.
Beta decay
Identify daughter of ³H in β⁻ decay.
Annihilation
Why are two photons needed from rest?
Quarks
Find charge of uud.
Meson
Classify u anti-d.
Conservation
Why include anti-νe in β⁻ decay?
Exchange
Describe β⁻ quark interaction.