Problem: A substance containing three elements (A, B and C) forms a cubic unit cell with A atoms at a every corner, B atoms at every edge, and a C atom in the center of the cubic unit cell. Which of the following would be the formula unit for this substance?(a) ABC(b) AB2C(c) AB3C(d) A2B3C(e) A8B12C
FREE Expert Solution
We are asked to identify the formula unit for this substance.
Depending on the location atom is located, it will have a corresponding fraction of that atom that is actually inside the cell.
- Corner → 1/8 atom
Problem Details
A substance containing three elements (A, B and C) forms a cubic unit cell with A atoms at a every corner, B atoms at every edge, and a C atom in the center of the cubic unit cell. Which of the following would be the formula unit for this substance?
(a) ABC
(b) AB2C
(c) AB3C
(d) A2B3C
(e) A8B12C
Frequently Asked Questions
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.