A spectrometer is used to study electron transitions in a vapour. Radiation transfers a total of 3.0 × 10-16 J to 500 electrons, moving each electron from orbit L to orbit N.
Each electron later returns to orbit L through orbit M. The transition from orbit N to orbit M emits 2.2 × 10-19 J per electron.
What energy is emitted by one electron during the transition from orbit M to orbit L?
3.8×10−19 J3.8\times10^{-19}\ \mathrm{J}3.8×10−19 J
8.2×10−19 J8.2\times10^{-19}\ \mathrm{J}8.2×10−19 J
2.2×10−19 J2.2\times10^{-19}\ \mathrm{J}2.2×10−19 J
6.0×10−19 J6.0\times10^{-19}\ \mathrm{J}6.0×10−19 J