Q. If a crystal lattice of a compound, each corner of a cube is enjoyed by sodium, each edge of a cube has oxygen and centre of a cube is enjoyed by tungsten (W), then give its formula
A) $Na_{2}WO_{4\ }$
B) $NaWO_{3\ }$
C) $Na_{3}WO_{3}$
D) $Na_{2}WO_{3}$
Explanation
(b)
No. of Na atoms present at each corner $= 8 \times \frac{1}{8} = 1$
No. of O atoms present at the centre of edges $= 12 \times \frac{1}{4} = 3$
No. of W atoms present at the centre of cube = 1
Formula of the compound $= NaWO_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.