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Consider the rock salt structure in the figure: (Figure 1) What type of structur

ID: 1009400 • Letter: C

Question

Consider the rock salt structure in the figure: (Figure 1) What type of structure would result if the remaining tetrahedral sites in the unit cell were also filled with cations? If the 4 tetrahedral holes in the zinc blende structure are filled, we have the rock salt structure. If the 4 tetrahedral holes in the zinc blende structure are filled, we have the face-centered structure. If the 4 tetrahedral holes in the zinc blende structure are filled, we have the fluorite structure. If the 4 tetrahedral holes in the zinc blende structure are filled, we have the antifluorite structure. Which of the following would you expect to have little or no band gap? Zn(s) Ge(s) S(s)

Explanation / Answer

ZnS is fcc structure.

B. if the four tetrahydral holes in the zinc blende structure filled , we have face centered structure.

A. S(s)