Consider an electrically neutral iron atom whose atomic numb

Consider an electrically neutral iron atom, whose atomic number is 26. If one electron is knocked out from the L shell of an iron atom, leaving behind a vacancy, or hole, from what energy shells can an electron make a transition to fill the hole and emit an L X ray?

Solution

Answer:

If one electron is knocked out from Lshell ,the electron can make transition from M(3s²,3p⁶) and Nshells(3d⁶,4s²) to emit Lx-ray.