76 Os
Transition metal
Osmium
Densest natural element.
Properties of Osmium
- Atomic number (Z)
- 76
- Symbol
- Os
- Atomic mass
- 190.23 g/mol
- Category
- Transition metal
- Group
- 8
- Period
- 6
- Electron configuration
- [Xe] 4f¹⁴ 5d⁶ 6s²
- Electronegativity (Pauling)
- 2.2
- Atomic radius
- 185 pm
- First ionization energy
- 840 kJ/mol
- Melting point
- 3306 K (3032.8 °C)
- Boiling point
- 5285 K (5011.9 °C)
- Density
- 22.61 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1803
Frequently asked questions
What is Osmium?
Osmium (Os) is a transition metal, element number 76 on the periodic table. Densest natural element.
What is the atomic number and atomic mass of Osmium?
Osmium has atomic number 76 and an atomic mass of about 190.23 g/mol.
What is the electron configuration of Osmium?
The electron configuration of Osmium is [Xe] 4f¹⁴ 5d⁶ 6s².
Where is Osmium on the periodic table?
Osmium sits in group 8, period 6, and is classified as a transition metal.