do we need to take any care while handling this element?
Yes, it is highly volatile and penetrates skin readily, and is very toxic by inhalation, ingestion, and skin contact.
Osmium
Osmium tetroxide is highly volatile and penetrates skin readily, and is very toxic by inhalation, ingestion, and skin contact. Airborne low concentrations of osmium tetroxide vapor can cause lung congestion and skin or eye damage, and should therefore be used in a fume hood. Osmium tetroxide is rapidly reduced to relatively inert compounds by e.g. ascorbic acid or polyunsaturated vegetable oils (such as corn oil).
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 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.
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Osmium [SEP] Precautions
Metallic osmium is harmless but finely divided metallic osmium is pyrophoric and reacts with oxygen at room temperature, forming volatile osmium tetroxide. Some osmium compounds are also converted to the tetroxide if oxygen is present. This makes osmium tetroxide the main source of contact with the environment. Osmium tetroxide is highly volatile and penetrates skin readily, and is very toxic by inhalation, ingestion, and skin contact. Airborne low concentrations of osmium tetroxide vapor can cause lung congestion and skin or eye damage, and should therefore be used in a fume hood. Osmium tetroxide is rapidly reduced to relatively inert compounds by e.g.