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Topic: Gaps in metalic structures (calculations)  (Read 2946 times)

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Offline Rutherford

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Gaps in metalic structures (calculations)
« on: January 25, 2013, 10:40:18 AM »
Palladium metal has a face-centered cubic crystalline structure in which there are two tetrahedron-shaped gaps and one octahedron-shaped gap per palladium atom. The metallic radius of palladium is 137 pm. Estimate the largest possible size of dopant atoms that could fill interstices in palladium metal to form an interstitial alloy without perturbing the crystal lattice.

I know how fcc looks, how to calculate the metal radius, side and diagonal. I don't know how to calculate the volume of the gaps. How to do it for the  tetrahedron shaped and how for the octahedron shaped gap?
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Offline Arkcon

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Re: Gaps in metalic structures (calculations)
« Reply #1 on: February 09, 2013, 09:56:46 AM »
Maybe this is a more advanced topic better suited to Inorganic Chemistry sub-forum
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline AWK

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Re: Gaps in metalic structures (calculations)
« Reply #2 on: February 09, 2013, 10:01:09 AM »
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Offline Rutherford

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Re: Gaps in metalic structures (calculations)
« Reply #3 on: February 09, 2013, 10:47:07 AM »
I actually solved this problem after examining a lot this field. Thanks anyway for the link, it will give me more practice.
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