If the close packed cations in an AB type solid with NaCl structure have a radius of 75 pm,what would be the maximum and mimimumsizes of the anions filling the voids ?

If the close packed cations in an AB type solid with NaCl structure ha

1.	If the close packed cations in an AB type solid with NaCl structure have a radius of 75 pm,what would be the maximum and mimimumsizes of the anions filling the voids ?
Answer» Solution :For close PACKED AB type solid with NaCl structure , ` ( r_(+))/(r_(-)) = 0.414 - 0.732` MINIMUM value of ` r_(-)= ( r_(+))/ 0.732 = 75/0.732 "pm" ` = 102 . 5 pm , MAXIMUM value of ` r_(-)= ( r_(+))/ 0.414 = 75/0.414 = 181 .2`pm .