Solid NaF has the so-called NaCl structure. The shortest distance between the centre of a sodium cation and the centre of a fluoride anion is 231.5 pm.
NaCl unit cell
Calculate the length of the edge of the conventional face-centred cubic unit cell of NaF.
Calculate the density of solid NaF.
Calculate the shortest distance (centre to centre) between two fluoride anions in solid NaF.