Metallic Edge

Face-Centered Cubic edge length question?

A metallic element with radius 128 pm crystallizes in a face-centered cubic unit cell. What is edge length of the unit cell?

Using the Pythagorean Theorem, we arrive at this:

radius of the atom = edge length times (2√2)

At this address:

http://www.chemteam.info/Liquids&Solids/WS-fcc-AP.html

I have a discussion of the above equation in problem #1.

Let d = the edge length

128 pm = d times (2√2)

d = 362 pm

Creating a Metallic Edge

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