A substance A_(x) B_(y) crystallises in a face centred cubic (FCC) lattice in which atoms 'A' occupy each corner of the cube and atoms 'B' occupy the centres of each face of the cube. Identify the correct composition of the substance A_(x)B_(y).

A substance A_(x) B_(y) crystallises in a face centred cubic (FCC) lat

1.	A substance A_(x) B_(y) crystallises in a face centred cubic (FCC) lattice in which atoms 'A' occupy each corner of the cube and atoms 'B' occupy the centres of each face of the cube. Identify the correct composition of the substance A_(x)B_(y).
Answer» <html><body><p>`AB_(3)`<br/>`A_(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)B_(4)`<br/>`A_(3)B`<br/><a href="https://interviewquestions.tuteehub.com/tag/composition-22493" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOSITION">COMPOSITION</a> cannotbe specified.</p>Solution :Number of A atoms per <a href="https://interviewquestions.tuteehub.com/tag/unit-1438166" style="font-weight:bold;" target="_blank" title="Click to know more about UNIT">UNIT</a> <a href="https://interviewquestions.tuteehub.com/tag/cell-25680" style="font-weight:bold;" target="_blank" title="Click to know more about CELL">CELL</a> =`8times1/8=1` <br/> Number of B atoms per unit cell = `6times1/2=3` <br/> Composition of solid = `AB_(3)`</body></html>