Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is mis

In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is

Option 1)  A_{2}B\;

Option 2)  \; AB_{2}\;

Option 3)  \; A_{2}B_{3}\;

Option 4)  \; A_{2}B_{5}

Answers (1)

best_answer

As we learnt in

No. of atoms(z) for face centered unit cell -

Lattice points: at corners and face centers of unit cell.

For face centered cubic (FCC), z=4.

- wherein

 

 

No. of atoms(z) for simple cubic unit cell -

Lattice points: at corners

For simple cubic (SC), z=1

- wherein

 

Number of atom A per unit cell =8\times \frac{1}{8}=1

Number of atom B per unit cell =5\times \frac{1}{2}=\frac{5}{2}

AB5/2 i.e. A2B5

Correct option is 4.

Posted by

avinash.dongre

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026: IIT Roorkee’s ECE emerges as top choice after CSE; closing rank rises
anam-khan

JEE Main 2026 application correction begins on jeemain.nta.nic.in; edit details by December 2
anam-khan

JEE Mains 2026 LIVE: NTA to conduct session 1 from January 21 to 30; exam pattern, syllabus

Latest Question