09.29: The diagram to the right shows the lowest four energy levels for an elect
ix)rsr/d 1z4/n-t xdiy /i1nt ron in a hypothetical atom. The electron is excited to the -1 eV level of the atom and transitions to the l
x-1yi/nr/4t )i tz1rx dsin d/owest energy state by emitting only two photons. Which of the following energies could not belong to either of the photons?