How many complete tungsten atoms are there in each BCC unit cell?

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Tungsten is a very high density, high melting point, and hard metal. These properties are
partially due to its body centered cubic (BCC) crystal structure. Tungsten has an atomic
number of 74 and an average mass of 183.8u. (1u = 1.661x10-27 kg). X-ray diffraction
experiments determine that the Bravais lattice has a characteristic length of 3.155 Å (This
means each side of the cube shown below has a length of 0.3155 nm.)
How many complete tungsten atoms are there in each BCC unit cell?
Transcribed Image Text:Tungsten is a very high density, high melting point, and hard metal. These properties are partially due to its body centered cubic (BCC) crystal structure. Tungsten has an atomic number of 74 and an average mass of 183.8u. (1u = 1.661x10-27 kg). X-ray diffraction experiments determine that the Bravais lattice has a characteristic length of 3.155 Å (This means each side of the cube shown below has a length of 0.3155 nm.) How many complete tungsten atoms are there in each BCC unit cell?
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