For an isolated crystal bounded by the planes A1, A2, with energies 1 and 2 the total surface energy will be given by _______

For an isolated crystal bounded by the planes A1, A2, with energies 1

1.	For an isolated crystal bounded by the planes A1, A2, with energies 1 and 2 the total surface energy will be given by _______
A.	(A1 1) (A2 2)
B.	(A1 1) / (A2 2)
C.	(A1- 1)(A2- 2)
D.	(A1 1) + (A2 2)
Answer» E.

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