If the lowest energy X-rays have `lambda=3.055xx10^(-8)` m, estimate the minimum difference in energy between two Bohr's orbits such that an electronic transition would correspond to the emission of an X-ray. Assuming that the electrons in other shells exert no influence, at what Z (minimum) would a transition form the second level to the first result in the emission of an X-ray?

Answer

2

Explanation

`Delta E = (hc)/(lambda) = 13.6 xx z^(2) [(1)/(1^(2))-(1)/(2^(2))] rArr :. Z = 2`