masss of proton=mass of neutrn[app]
mass of electron=1/1847*mass of proton
forces which are established in the example are attractive force[gravitational force beetwen the nucleus of H [/isotope]]
Consider the molecule D-D ,
For, D2 molecule, gravitational force bet. those two atoms is 4 times greater than in H2 - Newton's law of gravitation.
F' = Attractive force in d-d
F=attractive force in H---H
R= repulsive force
For D---D ,
F'=k'x' ..[x' =relative displacement of D atom ]
net outword force in D---D= R-F'
k'= R-F'/x' = [Const.] * R-F' / F' ..as motion is oscilatory
F'=[const] * x'
net outword force in H----H = R-F
k= R-F/x = [Const.] * R-F / F ..as motion is oscilatory
[(R-F)/F] > [(R-F')/F'] ....obviously
hence k>k' and frequency = [const] * sqrt k
thus , n > n' i.e. frequency of vibration for H---H molecules is more than that of D---D .