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Problem: Determine the number of atoms per unit cell for each of the following metals .Polonium

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We're asked to determine the number of atoms per unit cell for each of the following metals (a) polonium (b) tungsten (c) nickel 


First, we need to determine the type of unit cell


•The Simple Cubic Unit Cell is composed of a cube with an atom at each corner

•The body-centered cubic unit cell is composed of a cube with one atom at each of its corners and one atom at the center of the cube

•The face-centered cubic unit cell is composed of a cube with one atom at each of its corners and one atom in the center of each cube face.

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Problem Details

Determine the number of atoms per unit cell for each of the following metals .

Unit cells of polonium, tungsten and nickel. Poloniums unit cell has eight atoms at the corners of the cell (one eighth in and seven eighths out). Tungstens unit cell has one atom in the center of the cell and eight atoms at the corners of the cell (one eighth in and seven eighths out). Nickels unit cell six atoms within the faces of the cell (half in and half out) and eight atoms at the corners of the cell (one eighth in and seven eighths out).

Polonium

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What scientific concept do you need to know in order to solve this problem?

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