A) tetrahedral voids are bigger than octahedral
B) tetrahedral voids are smaller than octahedral
C) tetrahedral voids are equal in size as octahedral
D) None of the above
Correct Answer: B
Solution :
radius ratio As for an tetrahedral void \[({{r}^{+}}/{{r}^{-}})\] = 0.2247 to 0.414 For an octahedral void \[({{r}^{+}}/{{r}^{-}})\] = 0.414 to 0.732 Therefore, in a closed packed structure, tetrahedral voids are smaller than octahedral.
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