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Problem: This picture shows the cubic unit cell for ZnS. How many Zn2+ ions are in this cubic unit cell?How many S2- ions are in this cubic cell?

FREE Expert Solution

In a unit cell: atoms have different contribution depending on their location

                                                  contribution
corner atoms                                 1/8
atoms in center/fully inside          1
atoms in face of the cube            1/2 


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Problem Details

This picture shows the cubic unit cell for ZnS. How many Zn2+ ions are in this cubic unit cell?


How many S2- ions are in this cubic cell?


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