For a given metal, the energy required to move an atom from the inter – McqOptions

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1.	For a given metal, the energy required to move an atom from the interior of a crystal to its surface is E=1eV (0.16*10-18). Find the fraction of the vacant lattice site in metal at 500 degree Celsius.
A.	3.06*10-7
B.	1.02*10-10
C.	6.27*10-3
D.	8.2*10-18
Answer» B. 1.02*10-10

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