Problem: An oxide of rhenium crystallizes with the unit cell depicted here (where rhenium = gray and oxygen = red).What is the formula of the oxide?

🤓 Based on our data, we think this question is relevant for Professor Randles' class at UCF.

FREE Expert Solution

Recall that for a unit cell

# atoms = (# of corner atoms ×18)+(# of face atoms ×14)+(# of atoms at the center×1)

**Atoms on the corner will have 1/8 of its volume on the unit cell 

**Atoms on the cube face will have 1/4 of its volume on the unit cell 

This means that:

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Problem Details
An oxide of rhenium crystallizes with the unit cell depicted here (where rhenium = gray and oxygen = red)

The figure shows a unit cell of rhenium oxide. It looks like a cube with gray balls in each corner of that cube and a red ball in the center of each edge of the cube..


What is the formula of the oxide?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Unit Cell concept. You can view video lessons to learn Unit Cell. Or if you need more Unit Cell practice, you can also practice Unit Cell practice problems.

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Based on our data, we think this problem is relevant for Professor Randles' class at UCF.