The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n
Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0.
S=dF/dr at r=r0:
This is wrong answer for S:
Am/r^(m+1) - Bn/r^(n+1)
4 answers
still looking for what F is.
F is dU/dr, but can't be "r" in answer, only A, B, m, n and r0
Well, if F is dU/dr, and U is a function of r, then there will certainly be r in the answer.
But, you want F(r) at r=r0, so geez, just plug in r0!
Am/r0^(m+1) - Bn/r0^(n+1)
There are other ways of expressing that, but that's another exercise.
But, you want F(r) at r=r0, so geez, just plug in r0!
Am/r0^(m+1) - Bn/r0^(n+1)
There are other ways of expressing that, but that's another exercise.
I tried this yesterday and doesn't work