76
Os
Osmium
Osmium
Osmium (Os)
Transition Metals · Solid · Period 6 · Group 8
Element Properties
- Atomic Number
- 76
- Symbol
- Os
- Atomic Mass
- 190.2
- Category
- Transition Metals
- Standard State
- Solid
- Period
- 6
- Group
- 8
- Electronegativity
- 2.2
- Atomic Radius
- 216
- Ionization Energy
- 8.7
- Electron Affinity
- 1.1
- Oxidation States
- +4, +3
- Melting Point
- 3306 K (3032.85 °C)
- Boiling Point
- 5285 K (5011.85 °C)
- Density
- 22.57
- Electron Configuration
- [Xe]6s2 4f14 5d6
- Year Discovered
- 1803
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Frequently asked questions
What is the atomic number of Osmium?
The atomic number of Osmium is 76, which equals the number of protons in its nucleus.
What is the atomic mass of Osmium?
The atomic mass of Osmium is approximately 190.2 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Osmium?
The electron configuration of Osmium is [Xe]6s2 4f14 5d6.
Where is Osmium in the periodic table?
Osmium is located in period 6, group 8.
When was Osmium discovered?
Osmium was discovered in 1803.