09.29: The diagram to the right shows the lowest four energy
ml)i 9yxkri4-o0n(x d levels for an electron in a hypothetical 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
)ii(xldxy0 9-knr4 om either of the photons?