KF has NaCl structure. What is the distance (in pm) between K+ and F- in KF. If density is 2.48 gm/cm3?
268.8
537.5
155.3
5.375
Density formula :
For NaCl structure Z = 4
M for KF=58
Rock salt structure or NaCl type structure -
located at all corners and face centre
located at all octahedral voids
Edge length
Coordination number = 6:6
Thus, the distance between K+ and F- is