09.29: The diagram to the right shows the lowest four energy levels
irxzh1 0+jgwg 0 t6z2q 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 bel
z1 q+rwiz00 g2gtxjh6ong to either of the photons?