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12. Solids and Modern Material

Chapter 12, Problem 29a

Determine the number of atoms per unit cell for each metal.

(a) Polonium

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Hey everyone today, we're being asked to determine the number of atoms per unit self for the following structure. Now to do this, we first need to isolate just one of the unit cells. So let's do that. We have and let me just draw it out over here. Oops! So this is our unit cell. And as we have in the picture we have eight corners Per unit or eight corner atoms. My bad per unit cell as the orange dots represent in the actual photo. So since we have eight corners per unit cell and we have one corner atom Or since we have eight corner atoms per unit cell, this means that one corner atom occupies 1/8 of the cell right? Since we have eight corners and one would then be 1/8. So this means that if we have eight atoms, hey Adams times the one corner adam Taking up 1/ of the cell heath of the cell. This means that effectively we have one atom per unit cell. Right? said a little neater. one Adam per unit. So I hope this helps. And I look forward to seeing you all in the next one