Xenon crystallises in the face-centred cubic lattice and the edge of the unit cell is 620 pm. What is the nearest neighbour distance and what is the nearest neighbour distance and what is the radius of xenon atom ?

Xenon crystallises in the face-centred cubic lattice and the edge of t

1.	Xenon crystallises in the face-centred cubic lattice and the edge of the unit cell is 620 pm. What is the nearest neighbour distance and what is the nearest neighbour distance and what is the radius of xenon atom ?
Answer» SOLUTION :Here, a=620 PM , d=? , R=? For the face-centred CUBIC `d=a/sqrt2=620/1.414`=438.5 pm , `r=d/2=438.5/2` =219.25 pm