From the condition of the foregoing problems find how much (in pecent) the energy of the emitted photon differs from the energy of the corresponding transition in a hydrogen atom.

Explanation

We have
`epsilon=(3)/(3) ħR` and `epsilon~=(3)/(4) ħR-(1)/(2M)((3)/(4) ħR//c)^(2)`
Then `(epsilon-epsilon')/(epsilon)=(3 ħR)/(8Mc^(2))=(V_(H))/(2c)=5.5xx10^(-6)%`