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Assertion: In a close packing of spheres...

Assertion: In a close packing of spheres, a tetrahedral void is surrounded by four spheres whereas an octahedral void is surrounded by six spheres.
Reason: A tetrahedral void has a tetrahedral shape while an octahedral void has an octahedral shape

A

If both assertion and reason are correct and reason is correct explanation for assertion

B

If both assertion and reason are correct but reason is not correct explanation for assertion

C

If assertion is correct but reason is incorrect

D

If both assertion and reason are incorrect

Text Solution

Verified by Experts

The correct Answer is:
C
Correct Reason A tetrahedral hole is so called because it is surrounded by four spheres tetrahedrally while the octahedral hole is so called because it is surrounded by six spheres octahedrally
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An octahedral void is surrounded by

Assertion:A tetrahedral void is surrounded by four spheres and an octahedral void is surrounded by six spheres. Reason:The number of tetrahedral voids is double the number of close packed spheres and number of octahedral voids is equal to number of close packed spheres.

Which of the following statement is correct for a closet packed structure? (i) Each tetrahedral void is surrounded by 4 spheres and each sphere is surrounded by 8 tetrahedral voids. (ii) Each octahedral voids is surrounded by 6 spherus and each sphere is surrounded by 6 octahedral voids. (iii) The number of tetrahedral voids in a closest-packed arrangement is twice the number of spheres. (iv) The number of octahedral voids in a closest-packed arrangement is equal to the number of spheres.

A : The number of spheres are equal to the number of octahedral voids as well as tetrahedral void. R : Octahedral void and tetrahedral void has equal size.

An octahedral void is _______times larger than a tetrahedral void.

The coordination number of a tetrahedral void is ……,while that of an octahedral void is …….

Radius Ratio | Octahedral and Tetrahedral Voids

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