09.29: The diagram to the right shows the lowest four energy levels
xf kr+5dxryl:l 6bd gos-07z9 for an electron in a hypothetical atom. The electron is excited to the -1
-xo y+0fs :xl 5 9r7dgrkbzld6eV 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?