Question

· KF crystallizes in foc structure like sodium
chloride. Calculate the distance between
K+ and F- in KF. (Given : density of KF is
2.48 g cm-3)​

Answer 1

Answer:

As we know,

for such structure

2r

+

+2r

−

=a

Also, as we know,

density =nM/VN

o

here, n= 4

2.48=4∗58/(a)

3

(N

o

)

distance between K

+

andF

−

in KF = a/2 = 269 pm

solution