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.

Options

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

Answer

C

Explanation

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