09.29: The diagram to the right shows the lowest four energy levels for an el
+bh2e (x3, vga*km mzwybzd3.ectron in a hypothetic
3+bzaz(wge.b,hd*3v x mk2m yal atom. The electron is excited to the -1 eV level of the atom and transitions to the lowest energy state by emitting only two photons. Which of the following energies could not belong to either of the photons?