Story
NEET AITS
Story
Mock Tests
Story
Live Class
Story
JEE AITS

Density of unit cell

Unlock the full solution & master the concept.

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya
Question

Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is

Moderate
Solution

 For bcc lattice :Z=2,a=4r3

 For fcc lattice :Z=4,a=22rdR.T.d900°C=ZMNAa3bccZMNAa3fcc

Given, molar mass and atom radii are constant.

=2422r4r33=3342


Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!
ctaimg

ctaimg

Similar Questions

Statement 1: Density of the unit cell is same as the density of the substance.
Statement 2: Density of the unit cell has no relation with the volume of unit cell.
 

Want to Improve your productivity
talk to our academic experts now !!

counselling
india
+91

whats app icon