Q. In a cubic structure of diamond which is made from $X$and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is
A) $X_{2}Y$
B) $X_{3}Y$
C) $XY_{2}$
D) $XY_{3}$
Explanation
(d)
Number of atoms at corner $= 8 \times \frac{1}{8} = 1$
Number of atoms at face centres $= 6 \times \frac{1}{2} = 3$
$\therefore$ The formula of the compound is $XY_{3}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.