A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y^-) will be

A solid compound XY has NaCl structure. If the radius of the cation is

1.	A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y^-) will be
Answer» 275.1 322.5 PM 241.5 pm 165.7 pm Solution :NACL has face-centred cubic arrangement of `Cl^-` IONS and `NA^+` ions are present in the octahedral voids. Hence, for such a SOLID radius of cation =0.414 xradius of the anion ( or `r_+/r_(-)`=0.414) i.e., `r_+= 0.414xxr_(-)` or `r_(-)=r_+/0.414=100/0.414`=241.5 pm