A solid A^(+)B^(-) has NaCl close packed structure. The radius of thecation when the radius of the anion is 250 pm is

A solid A^(+)B^(-) has NaCl close packed structure. The radius of thec

1.	A solid A^(+)B^(-) has NaCl close packed structure. The radius of thecation when the radius of the anion is 250 pm is
Answer» 103.5 pm 207 pm 69 pm 276 pm Solution :Since the solid `A^(+) B^(-)`has NaCl type close packed structure, it belongs to a system with coordination number 6. In thesecases the ratio of the cation to the anion radii is GIVEN by `R^(+)/r^(-)ge0.414` `"Now" r^(-)=250"pm"` `thereforer^(+)=250times0.414=103.5"pm"`