3 The structures of simple solids

  Self-test  3.2  Convert the projection diagram of the unit cell of the SiS 

2

  structure shown in  Fig.  3.10   into a 

three-dimensional  representation.   

Zn

2+

S

2–

a

b

c

   Figure 3.6*  

The cubic ZnS structure.    

Cs

+

Cl

–

   Figure 3.7*  

The cubic CsCl structure.    

W

(a)

(b)

(0,1)

½

   Figure  3.8  

(a)* The structure of 

metallic tungsten and (b) its projection 

representation.    

(0,1)

(0,1)

½

½

   Figure  3.9  

The projection representation of 

an fcc unit cell.    

2523_Ch03.indd   68

2523_Ch03.indd   68

10/1/2013   7:03:57 PM

10/1/2013   7:03:57 PM