Metallic magnesium has a hexagonal close-packed structure and density of of 1.74 g cm-3. Assuming magnesium atoms to be spherical, calculate the radius of magnesium atom. (atomic mass of Mg = 24.3) ?
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The ratio of atomic sphere volume to unit cell volume, assuming a hard sphere model. Magnesium is hcp with c/a =1.624, density = 1.74g/cm^3.
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