does this element have any uses?
Osmium alloys such as osmiridium are very hard and, along with other platinum-group metals, are used in the tips of fountain pens, instrument pivots, and electrical contacts, as they can resist wear from frequent operation. Osmium tetroxide has been used in fingerprint detection and in staining fatty tissue for optical and electron microscopy.
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. Osmium alloys such as osmiridium are very hard and, along with other platinum-group metals, are used in the tips of fountain pens, instrument pivots, and electrical contacts, as they can resist wear from frequent operation. They were also used for the tips of phonograph styli during the late 78 rpm and early "LP" and "45" record era, circa 1945 to 1955. Osmium-alloy tips were significantly more durable than steel and chromium needle points, but wore out far more rapidly than competing, and costlier, sapphire and diamond tips, so they were discontinued.

Osmium tetroxide has been used in fingerprint detection and in staining fatty tissue for optical and electron microscopy. As a strong oxidant, it cross-links lipids mainly by reacting with unsaturated carbon–carbon bonds and thereby both fixes biological membrane
the density of osmium which is the densest metal It is approximately twice as dense as lead and slightly denser than iridium. what is osmium? It is a chemical element with the symbol Os and atomic number 76. where did it get its name from? From Greek word  "osme" meaning "smell". who was the first one to discover numbers for atoms? Henry Moseley are there elements that are also missing? There were seven elements  which were not found and therefore identified as still undiscovered, but from 1918 to 1947, all seven of these missing elements were discovered what is the colour of the former chemical element? Bluish-white transition metal what does it react when it comes in contact with other elements? Osmium tetroxide  is formed when powdered osmium is exposed to air,  it  forms red osmates upon reaction with a base, with ammonia, it forms the nitrido-osmates, etc. can you state one physical property of the first element you mentioned? UNANSWERABLE does the former element also have isotopes? Yes, it  has seven naturally occurring isotopes, six of which are stable and undergoes alpha decay name you name some of its naturally occurring isotopes? UNANSWERABLE
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Osmium [SEP] Applications
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. Osmium alloys such as osmiridium are very hard and, along with other platinum-group metals, are used in the tips of fountain pens, instrument pivots, and electrical contacts, as they can resist wear from frequent operation. They were also used for the tips of phonograph styli during the late 78 rpm and early "LP" and "45" record era, circa 1945 to 1955. Osmium-alloy tips were significantly more durable than steel and chromium needle points, but wore out far more rapidly than competing, and costlier, sapphire and diamond tips, so they were discontinued.