09.29: The diagram to the right
tgrqzmd6o r /+/j,7jb shows the lowest four energy 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 c
mzjbd /,7g6 jqt/rr +oould not belong to either of the photons?