Q. Potassium fluoride has $NaCl$ type structure. What is the distance between $K^{+}$ and$\ F^{-}$ ions if cell edge is $a$ cm?
A) $\frac{a}{2}cm$
B) $\frac{a}{4}cm$
C) $2a\ cm$
D) $4a\ cm$
Explanation
(a)
Distance between $K^{+}$ and $F^{-} = \frac{1}{2} \times \$length of the edge
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.