Os
Osmium Symbol (Os)
Osmium is element 76 of the periodic table. Copy its symbol Os and see its atomic weight, electron configuration and physical properties.
What does Os mean?
Os is the chemical symbol for osmium, element number 76 in the periodic table. Osmium is a transition metal in group 8, period 6. It is a solid at room temperature and was discovered in 1803.
Codes and properties
| Chemical symbol | Os |
|---|---|
| Atomic number (Z) | 76 |
| Atomic weight (PubChem) | 190.2 |
| Group / period | 8 / 6 |
| Element category | transition metal |
| Electron configuration | [Xe]6s² 4f¹⁴ 5d⁶ |
| State at 20 °C | Solid |
| Oxidation states | +4, +3 |
| Electronegativity (Pauling) | 2.2 |
| Melting point | 3306 K (3032.85 °C) |
| Boiling point | 5285 K (5011.85 °C) |
| Density | 22.57 g/cm³ |
| Discovered | 1803 |
How to type Os
- Plain text: type
Os— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Os}in math mode, or use the mhchem package:\ce{Os}. - HTML:
Os; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for osmium?
The chemical symbol for osmium is Os.
What is the atomic number of osmium?
Osmium has atomic number 76, meaning each atom has 76 protons.
What is the electron configuration of osmium?
The ground-state electron configuration of osmium is [Xe]6s² 4f¹⁴ 5d⁶.
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Reference: Osmium on PubChem (NIH)