Osmium is a hard but brittle metal that remains lustrous even at high temperatures. It has a very low compressibility. Correspondingly, its bulk modulus is extremely high, reported between 395 and 462 …

Dec 16, 2025 · Osmium, chemical element, one of the platinum metals of the periodic table and the densest naturally occurring element. A gray-white metal, osmium is very hard, brittle, and difficult to …

Osmium occurs uncombined in nature and also in the mineral osmiridium (an alloy with iridium). Most osmium is obtained commercially from the wastes of nickel refining.

Nov 18, 2023 · Osmium is an extremely hard and dense metallic element with symbol Os and atomic number 76. Although it is a rare element, you encounter it in daily life in ballpoint pens and electrical …

Dec 13, 2025 · Osmium is the rarest and densest naturally occurring precious metal, with global annual production of less than 1 ton, making it far scarcer than gold or platinum.

Osmium (chemical symbol Os, atomic number 76) is a hard, brittle, blue-gray or blue-black transition metal in the platinum family and is found as an alloy in platinum ore.

Osmium metal is lustrous, bluish white, extremely hard, and brittle even at high temperatures. It has the highest melting point and lowest vapour pressure of the platinum group.

Osmium is used to produce fountain pen tips. Discovered in 1803 by Tennant in the residue left when crude platinum is dissolved by aqua regia. Osmium occurs in iridosule and in platinum-bearing river …

Osmium metal is lustrous, bluish-white, hard, and brittle; it melts at 3,127°C (5,661°F) and boils at 5,303°C (9,577°F). It is the densest element known: Its density is 22.59 grams (0.8 ounces) per cubic …

Osmium (Os) is a transition metal recognized as the densest naturally occurring element, with an atomic number of 76. Characteristically hard and brittle, osmium has a bluish-white appearance and belongs …