Homework Answers
Given EN= -A/r + B/rn
Hence d(EN/dr) =A/r2 – nB/r(n+1) = 0 for minimum energy, r becomes r0 ( the minium interatomic spacing
A/ro2 = nB/ro(n+1)
ro (n+1)/ro2= nB/A
ro(n+1-2)= (nB/A )
ro= (nB/A )1/(n-1)
EN( Minimum)= -A/(nB/A)1/(n-1) +B/(nB/A)n/(n-1)
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1)
2)
3)
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