09.29: The diagram to the right shows the lowest four energy levels for an
izh(3t0x knhtcr,xk48xa/w+sxon ) ) electr
xtnrt,n80sx(z)ci ok h/) aw x4xk+3h on 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 either of the photons?