For a given metal, the energy required to move an atom from the interi – 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<sup>-7</sup>
B.	1.02*10<sup>-10</sup>
C.	6.27*10<sup>-3</sup>
D.	8.2*10<sup>-18</sup>
Answer» B. 1.02*10<sup>-10</sup>

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