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Problem: The unit cell for nickel arsenide is shown below. What is the formula of this compound?

FREE Expert Solution

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

                                                  contribution
corner atoms                                 1/8
atoms in center                             1
atoms in face of the cube            1/2 
atoms in edge of the cube           1/4


2 atoms in center → As

8 corner atoms + 4 edge atoms → Ni

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Problem Details

The unit cell for nickel arsenide is shown below. What is the formula of this compound?

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.