Solid StateHard
Question
Which of the following is/are correct statement(s) about Fe3O4 crystal?
Options
A.Fe2+ ions occupy octahedral voids only.
B.Fe3+ ions occupy tetrahedral voids only.
C.Fe3+ ions occupy octahedral as well as tetrahedral voids.
D.O2− ions are present at the corner as well as the centre of alternate faces.
Solution
$O^{2 -} = CCP$
$Fe^{2 +} = \frac{1}{4} \times O.V. = 1$
$Fe^{3 +} = 1$in T.V. and 1 in O.V.
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