09.29: The diagram to the right shows the lowest four energy levels for an ele
aq7qjjf.8-2 lheo f-gctron in a hypothetical atom. The electro
eh7f - qf2a.g lj8qo-jn 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?