Home
Class 11
CHEMISTRY
How many atoms can be assigned to its un...

How many atoms can be assigned to its unit cell if an element forms (i) a body centred cubic cell and （ii) face centred cubic cell ?

Text Solution

Verified by Experts

Atoms per unit cell in a body-centred cubic cell = `8 xx 1/8` ( from corners) + 1 ( from body centre )= 2
Atoms per unit in a face- centred cubic cell =` 8xx 1/8 ` ( from corners) + ` 6 xx 1/2` ( from centres ) = 4
Promotional Banner

Topper's Solved these Questions

  • APPENDIX

    PRADEEP|Exercise 6 WHAT HAPPENS WHEN|1 Videos

  • APPENDIX

    PRADEEP|Exercise 7 WHAT HAPPENS WHEN|1 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    PRADEEP|Exercise Curiosity Questions|2 Videos

Similar Questions

Explore conceptually related problems

How many atoms can be assigned to its unit cell if an element forms (i) a body centred cubic unit cell (ii) face centred cubic unit cell ?

In face-centred cubic unit cell :

Unit cells can be divided into two categories, primitive and centred unit cells. (a) Differentiate between unit cell and crystal lattice. (b) Calcualte the number of atoms per unit cell in the following: (i) body centred cubic unit cell (bcc) (ii) face centred cubic unit cell (fcc) .

Calculate the co - ordination number of an atom in : (i) A primitive cubic unit cell, (ii) A body - centred cubic unit cell. (iii) A face - centred cubic unit cell.

The number of atoms for primitive unit cell is ________, for body centred cubic unit cell is _______ and for face centred cubic unit cell is ___________.

Calculate the number (n) of atoms contained within (a) cubic cell, (b) a body - centred cubic cell, (c) a face - centred cubic cell.