A compound AB crystallises in bcc lattice with the unit cell edge length of 380 pm. Calculate (i)The distance between oppositely charged ions in the lattice. (ii) radius ofB^(-) if he radius ofA^(+) is 190 pm.

A compound AB crystallises in bcc lattice with the unit cell edge leng

1.	A compound AB crystallises in bcc lattice with the unit cell edge length of 380 pm. Calculate (i)The distance between oppositely charged ions in the lattice. (ii) radius ofB^(-) if he radius ofA^(+) is 190 pm.
Answer» Solution :(i) For BCC, DISTANCE ` A^(+) an B^(-) = sqrt3/2 ` a, i.e, it is half of BODY diagonal