🤓 Based on our data, we think this question is relevant for Professor Wright's class at CCNY.
A body-centered cubic (BCC) unit cell is composed of a cube with one atom at each of its corners and one atom at the center of the cube.
Recall that the edge length (a) of a BCC unit cell can be calculated using the equation:
Step 1: Calculate the volume of 1 unit cell using density
Recall the # of atoms present per 1 BCC unit cell: corner atoms contribute 1/8 and the center atom contribute 1
# of atoms = 2 per 1 unit cell
• Solving volume of 1 unit cell:
volume of unit cell = 2.406 x 10-23 cm3
Chromium crystallizes with a body-centered cubic unit cell. The radius of a chromium atom is 125 pm. Calculate the density of solid crystalline chromium in grams per cubic centimeter.
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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 Wright's class at CCNY.