Atomic NumberAtomic Number of Osmium
Atomic Number of Osmium is 76.
Chemical symbol for Osmium is Os. Number of protons in Osmium is 76. Atomic weight of Osmium is 190.23 u or g/mol. Melting point of Osmium is 3045 °C and its the boiling point is 5027 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Osmium
Osmium is a shiny strong metal, very resistive to corrosion. Its name comes from the word Greek word meaning smell. Osmium is known as the densest element in the Periodic table. The element itself is not toxic, but its compounds like oxides and others can be very toxic and cause serious conditions for human body or a living organism. This element can be found in nature in its pure form, as well as extracted from minerals like osmiridium. There are not too many applications of this chemical element; those include only producing some needles for special needs, some elements for fountains, electrical contacts, as well as being a catalyst for some chemical processes in chemical industry.
Properties of Osmium Element
| Atomic Number (Z) | 76 |
|---|---|
| Atomic Symbol | Os |
| Group | 8 |
| Period | 6 |
| Atomic Weight | 190.23 u |
| Density | 22.61 g/cm3 |
| Melting Point (K) | 3306 K |
| Melting Point (℃) | 3045 °C |
| Boiling Point (K) | 5285 K |
| Boiling Point (℃) | 5027 °C |
| Heat Capacity | 0.13 J/g · K |
| Abundance | 0.002 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Transition metal |
| Electronegativity (Pauling) χ | 2.2 |
| Ionization Energy (eV) | 8.4382 |
| Atomic Radius | 130pm |
| Covalent Radius | 128pm |
| Valence Electrons | 2 |
| Year of Discovery | 1803 |
| Discoverer | Tenant |