A solid A^+ B^- has NaCl type close packed structure. If the anion has a radius of 250 pm, what should be the ideal radius of the cation ? Can a cation C^+ having a radius of 180 pm be slipped into the tetrahedral site of the crystal A^+ B^- ? Give reason for your answer.

A solid A^+ B^- has NaCl type close packed structure. If the anion has

1.	A solid A^+ B^- has NaCl type close packed structure. If the anion has a radius of 250 pm, what should be the ideal radius of the cation ? Can a cation C^+ having a radius of 180 pm be slipped into the tetrahedral site of the crystal A^+ B^- ? Give reason for your answer.
Answer» <html><body><p><br/></p>Solution :`(r_(+)(<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a>^+))/(r_(-)(B^-))="180pm"/"250pm"=0.72` <br/> It does not lie in the <a href="https://interviewquestions.tuteehub.com/tag/range-1177030" style="font-weight:bold;" target="_blank" title="Click to know more about RANGE">RANGE</a> 0.225-0.414 . <a href="https://interviewquestions.tuteehub.com/tag/hence-484344" style="font-weight:bold;" target="_blank" title="Click to know more about HENCE">HENCE</a>, `C^+` cannot be slipped into the tetrahedralsite.</body></html>