For the given close packed structure of a salt made of cation $X$ and anion $Y$ shown below (ions of only one face are shown for clarity), the packing fraction is approximately (packing fraction $= \frac{packing efficiency)}{100}$

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

0.63

0.52

0.74

0.48

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$\sqrt{2} a = 2 r_{x} \times 2 r_{y}$

$a = 2 r_{y}$

$\sqrt{2} a = 2 r_{x} + a$

$2 r x = (\sqrt{2} - 1) a$

$r x = \frac{(\sqrt{2} - 1)}{2} a$

$p . f = \frac{3 \times \frac{4}{3} π {(\frac{(\sqrt{2} - 1)}{2} a)}^{3} + \frac{4}{3} π {(\frac{a}{2})}^{3}}{a_{3}} = 0.63$

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE