A uni-univalent ionic crystal AX is composed of the following radii (arbitrary units) : {:(A^+,A^-),(1.0,2.0):} Assuming that ions are hard spheres , predict giving reasons whether the crystal will have sodium chloride cesium chloride structure. Calculate the volume of the unit cell.

A uni-univalent ionic crystal AX is composed of the following radii (a

1.	A uni-univalent ionic crystal AX is composed of the following radii (arbitrary units) : {:(A^+,A^-),(1.0,2.0):} Assuming that ions are hard spheres , predict giving reasons whether the crystal will have sodium chloride cesium chloride structure. Calculate the volume of the unit cell.
Answer» <html><body><p><br/></p>Solution :`r_(+)//r_(-)`=2/1=0.5 which <a href="https://interviewquestions.tuteehub.com/tag/lies-1073086" style="font-weight:bold;" target="_blank" title="Click to know more about LIES">LIES</a> in the range 0.414-0.732 , <a href="https://interviewquestions.tuteehub.com/tag/hence-484344" style="font-weight:bold;" target="_blank" title="Click to know more about HENCE">HENCE</a> , it has <a href="https://interviewquestions.tuteehub.com/tag/sodium-1215510" style="font-weight:bold;" target="_blank" title="Click to know more about SODIUM">SODIUM</a> chloride structure.<br/> Edge=2 `(r_++ r_-)` =6 au . Volume =`(6 au)^<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>=216(au)^3`</body></html>