In the Unit Cell of Sphalerite, Zn²⁺ Ions Occupy Half

question 40

Multiple Choice

In the unit cell of sphalerite, Zn²⁺ ions occupy half the tetrahedral holes in a face-centered cubic lattice of S^2- ions. What is the number of formula units of ZnS in the unit cell?

• A) 3
• B) 5
• C) 4
• D) 1
• E) 2

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