Question

Statement-1:In NaCl crystal, all the octahedral voids are occupied by `Na^+` ions
Statement-2:The number of octahedral voids is equal to the number of `Cl^-` ions in the packing
A. Statement 1 is True , Statement-2 is True , Statement-2 is a correct explanation for statement-1
B. Statement 1 is True , Statement-2 is True , Statement-2 is NOT a correct explanation of Statement-1
C. Statement-1 is True , Statement-2 is False
D. Statement -1 is False , Statement -2 is True

Answer 1

Correct Answer - B
Correct explanation .`Na^+` ions can be placed only in the octahedral voids. (Tetrahedral voids are too small to accommodate them ).