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The figure below shows the interatomic potential ( left panel ) and corresponding force ( right ) for two fcc metals ( metal 1 and

The figure below shows the interatomic potential (left panel) and corresponding force
(right) for two fcc metals (metal 1 and metal 2). Assume that only nearest neighbor atoms
interact with one another (i.e. each atom only "sees" its 12 nearest neighbors).
1.1 What is the relationship between the separation corresponding to the minimum of the
interatomic bonding rmin and the equilibrium separation between atoms req at T=0K?
rmin=reqrmin>reqT=300Krmin=reqrmin>reqrmin
rmin=req
rmin>req
1.3If the atomic mass of metal 1is larger than that of metal 2. Which metal has a higher
density? Briefly explain your answer.
1.4 Which of the two metals has the highest Young's modulus? Explain you answer.rmin
rmin=req
rmin>req
1.2 How about atT=300K?
rmin
rmin=req
rmin>req
1.3If the atomic mass of metal 1is larger than that of metal 2. Which metal has a higher
density? Briefly explain your answer.
1.4 Which of the two metals has the highest Young's modulus? Explain you answer.
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