Asked by Ian

KF has the same type of crystal structure as NaCl. The unit cell of KF has an edge length of 5.39 Å. Find the density of KF in g/cm3
Answered by Damon
You probably know the edge length for NaCl but I do not.

mass of NaCl molecule = molecular mass of NaCl/6*10^23
mass of KF Molecule = molecular mass of KF/6*10^23

density of KF = length of KF^3/length of NaCl^3 * (Mass of KF/Mass of NaCl)

note Avagadro's number cancels
Answered by Damon
Oh, times density of NaCl of course
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