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The binding energy of a H-atom, consider...

The binding energy of a H-atom, considering an electron moving around a fixed nucleus (proton), is `B=-(me^4)/(8n^2epsilon_0^2h^2)`(m=electron mass)
If one decides to work in a frame of reference where the electron is at rest, the proton would be moving around it. By similar arguments, the binding energy would be
`B=-(me^4)/(8n^2epsilon_0^2h^2)`(M=proton mass).
This last expression is not correct because.

A

n would not be integral

B

Bohr-quantisation applies only to electron.

C

the frame in which the electron is at rest is not inertial.

D

the motion of the proton would not be in the circular orbits, even approximately.

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