Denses Element
What is the densest element?
Some websites say that osmium is the densest material. Others say irridium is. Which is denser? First, let's find out what they even are.
Osmium
This metal is lustrous, bluish white, extremely hard, and brittle even at high temperatures. It has the highest melting point and the lowest vapour pressure of the platinum group. The metal is very difficult to fabricate, but the powdered or spongy metal slowly gives off osmium tetroxide, which as a powerful oxidising agent and has a strong smell. The tetroxide is highly toxic, and boils at 130 degrees celcius.
Irridium
Iridium is white but with a slight yellowish cast. Because iridium is very hard and brittle, it is hard to machine, form, or work. It is the most corrosion-resistant metal known, and was used in making the standard meter bar of Paris, which is a 90 percent platinum and 10 percent iridium alloy.
So...which is heavier??
The measured densities of iridium and osmium seem to indicate that osmium is slightly more dense than iridium, so osmium has generally been credited with being the heavier element. Calculations of the density from the space lattice which may be more reliable for these elements than actual measurements, however, give a density of 22.65 for iridium compared to 22.661 for osmium. Despite this information, no decision has been made as to which is heavier.
Densest Element On Earth...
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