Which element on the periodic table derives its name from the Greek word for "smell"?

Osmium (from Greek "osme", "smell") is a chemical element with the symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element. Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical contacts, and in other applications that require extreme durability and hardness. The element's abundance in the Earth's crust is among the rarest.

Osmium was discovered in 1803 by Smithson Tennant and William Hyde Wollaston in London, England. The discovery of osmium is intertwined with that of platinum and the other metals of the platinum group. Chemists who studied platinum dissolved it in a mixture of hydrochloric and nitric acids to create soluble salts. They always observed a small amount of a dark, insoluble residue. Tennant analyzed the insoluble residue and concluded that it must contain a new metal. He continued his research and identified two previously undiscovered elements in the black residue, iridium and osmium.

Because of the volatility and extreme toxicity of its oxide, osmium is rarely used in its pure state, but is instead often alloyed with other metals for high-wear applications.