Periodic Landscapes - Densities of solid elements at 298K
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Densities of solid elements at 298 K

Density is defined as mass per unit volume. The volume of a sphere is proportional to the cube of its radius. Across the Periodic Table atomic masses and atomic radii vary differently so its swings and roundabouts what happens to the densities! Incidentally lead is only the twenty third most dense of the elements.
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