Consider the (eight) n=2 states, ∣2ℓmℓms⟩. Find the energy of each state, under strong-field Zeeman splitting. Express each answer as the sum of three terms: the Bohr energy, the fine-structure (proportional to α2), and the Zeeman contribution (proportional to μBBext). If you ignore fine structure altogether, how many distinct levels are there, and what are their degeneracies?