NaCl Unit Cell Measurments

The Unit Cell of a NaCl molecule:

NaCl FCC Structure

Calculations for height, length, and width:
Radius	Actual lengths of atoms:	Measured lengths of atons:
Na:	9.50x10^ -10 m	5.00x10^ -3 m
Cl:	18.1x10^ -10 m	13.5x10^ -3 m
	NaCl crystal structure:	FCC

From the center of the Cl atom to the outside, the length would be equivalent to the radius. If there are two Cl atoms on each side then we would need to double the radius and we are left with the space between the two atoms; in this case, the diameter of a Na atom. Here it is shown in mathematical form:

(18.1x10^-10 meters) + (18.1x10^-10 meters) + (9.5x10^-10 meters) = (3.65x10^-9 meters) = (3.65 nanometers) = (36.5 ångströms)

Digital 

Representation

 

Atomic Weight
Element
Na:	22.99
Cl:	35.45
NaCl:	58.44
Measurments are in amu