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.)What is the density of single-crystalline tungsten? (Give your answer in g/cm.) Note: Single-crystalline indicates that the BCC unit cell repeats indefinitely. In poly-crystalline metals there are multiple domains with boundaries where the crystal structures do not line up. These materials tend to be much more brittle.

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.)What is the density of single-crystalline tungsten? (Give your answer in g/cm.) Note: Single-crystalline indicates that the BCC unit cell repeats indefinitely. In poly-crystalline metals there are multiple domains with boundaries where the crystal structures do not line up. These materials tend to be much more brittle.

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