09.29: The diagram to the r
1 bf z)ed8jr*9o:ilncight 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 could not belong to either of the p
l1 *8fce 9nrjz)o:dbihotons?