A compound formed by elements X and Y crystallizes in the cubic structure where Y atoms are at the corners of the cube and X atoms are at the alternate faces. What is the formula of the compound ?

A compound formed by elements X and Y crystallizes in the cubic struct

1.	A compound formed by elements X and Y crystallizes in the cubic structure where Y atoms are at the corners of the cube and X atoms are at the alternate faces. What is the formula of the compound ?
Answer» <html><body><p><br/></p>Solution :As there are 8 Y <a href="https://interviewquestions.tuteehub.com/tag/atoms-887421" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMS">ATOMS</a> at the corners and <a href="https://interviewquestions.tuteehub.com/tag/contribution-932552" style="font-weight:bold;" target="_blank" title="Click to know more about CONTRIBUTION">CONTRIBUTION</a> of each =`1/8`, therefore , no. of Y atoms/unit <a href="https://interviewquestions.tuteehub.com/tag/cell-25680" style="font-weight:bold;" target="_blank" title="Click to know more about CELL">CELL</a> `=8xx1/8=1` . There can be only two X atoms on <a href="https://interviewquestions.tuteehub.com/tag/alternate-373425" style="font-weight:bold;" target="_blank" title="Click to know more about ALTERNATE">ALTERNATE</a> faces. As contribution of each of them =`1/2`, therefore, no. of X-atoms/unit cell =`2xx1/2=1`. Hence, formula is <a href="https://interviewquestions.tuteehub.com/tag/xy-747762" style="font-weight:bold;" target="_blank" title="Click to know more about XY">XY</a></body></html>