Question

If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of
octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium
ions, m and n, respectively, are
(A) 1/2 , 1/8
(B) 1, 1/4
(C) 1/2, 1/2
(D) 1/4, 1/8

Answer 1

Answer:

I thought (c) is correct.

(c) 1/2,1/2

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