Chemistry
posted by Lauren .
what is the volume of the unit cell?
A metal crystallizes in a facecentered cubic lattice. The radius of the atom is 0.197 nm. The density of the element is 1.54 g/cm^3

And the question is?? And tell us what you don't understand about it.

The question is what is the volume of the unit cell?
I don't understand how to get the volume of it 
The diagonal along the face of the crystal for a fcc is 4r. Since you know the radius you can calculate the length of the diagonal. Remember that the diagonal of a right triangle in which the sides are equal is a^2 + a^2 = (diagonal)^2 which allows you to calculate a, the edge of the cell. Then a^3 is the volume. Post your work if you get stuck.
Respond to this Question
Similar Questions

chemistry
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. What is the radius of a gallium atom? 
chemistry
This problem is from my chemistry book and I am having a little trouble with the intermediary steps: Barium metal crystallizes in a body centered cubic lattice (atoms at lattice points only) The unit cell edge length is 502 pm, and … 
chemistry
Strontium has density of 2.64 and crystallizes with the facecentered cubic unit cell. Find the radius of the strontium atom 
chemistry
a metal crystallizes in the face centred cubic cubic crustal structure with a unit cell edge of 5.48 x10 power of 8 cm.the density of the metal is 6.90g per cubic cm. a. what is the mass in grams, of a single atom of this element. … 
chemistry
a metal crystallizes in the face centered cubic crystal structure with a unit cell edge of 5.48 x10 power of 8 cm. the density of the metal is 6.90 g per cubic cm. a. what is the mass (g) of a single atom of this element. b. what … 
Chemistry
Copper has density of 8.94 and crystallizes with the facecentered cubic unit cell. Calculate the radius of a copper atom. 
chemistry
You are given a small bar of an unknown metal, X. You find the density of the metal to be 11.7 g/cm3. An Xray diffraction experiment measures the edge of the unit cell as 5.12 angstroms. Assuming the metal crystallizes in a facecentered … 
Chemistry
An element crystallizes in a bodycentered cubic lattice. The edge of the unit cell is 2.77 , and the density of the crystal is 8.65 . Find the atomic weight of the element. 
Chemistry
A metal crystallizes in a facecentered lattice. The radius of the atom is 198pm and the density of the element is 6.57g/cm^3. What is the identify of the metal? 
Chemistry
Aluminum metal crystallizes in a face centered cubic lattice. If each Al atom has a radius of 1.43 A what is the density of aluminum metal?