The binding energy of a H-atom considering an electron moving around a fixed nuclei (proton), is
`B = - (me^(4))/(8n^(2)epsi_(0)^(2)h^(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^(2)epsi_(0)^(2)h^(2))` (M = proton mass)
This last expression is not correct, because

Options

A. n would not be integral
B. Bohr-quantisation applies only two electron
C. the fram in which the electron is at rest is not inertial
D. the motion of the proton would not bein circular orbits, even approximately.

Answer

C

Explanation

When one decides to work in a frame of referenc where the electron is at rest, the give expression is not true as it forms the non-inetrial frame of reference.