Q. 244.6( 21 Votes )

Aluminium crystal

Answer :

Given, radius of atom = 125 pm

i) for ccp structure, we know that

where, r = radius and a = length of side

125 pm

a = 125 × pm

a = 125 × 2 × 1.414 pm

a = 353.5 pm

ii) volume of one unit cell = a3

= (353.5 × 1- -3cm)3

= 44192902.36 × 10-30

= 442 × 10 -25 cm 3

Thus, number of unit cell of aluminium in 1 cm3

=

= 2.27 × 10 22 unit cell.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses