Hs
277.000Hassium
Hassiyum
Hassium is a synthetic transactinide element with atomic number 108. It is known for hassium tetroxide, Group 8 chemistry, comparisons with osmium tetroxide and its name from Hesse, Germany.
108
277 g/mol
[Rn] 5f¹⁴ 6d⁶ 7s²
2 | 8 | 18 | 32 | 32 | 14 | 2
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40.7 g/cm³
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GSI Darmstadt
Hassium was synthesized in 1984 at GSI Darmstadt. Its name comes from Hassia, the Latin name for Hesse, the German state where GSI is located.
Hassium-269
Half-life: About 10-16 seconds. Short-lived isotope used in hassium chemistry discussions.Hassium-270
Half-life: About 18-22 seconds. Isotope used in early hassium tetroxide chemistry experiments.Hassium-277m
Half-life: About 130 seconds. Metastable state among the longer-lived reported hassium states; values vary by source.HsO₄
Hassium TetroxideVolatile Group 8 tetroxide compared with OsO₄ and RuO₄.- Gas-phase chemistry of hassium tetroxide
- Testing Group 8 analogies with osmium and ruthenium
- Relativistic chemistry and volatility studies
- Nuclear decay-chain research
Hassium has no biological role. It is synthetic, radioactive and extremely short-lived.
- HsO₄ is one of the most famous compounds made from a superheavy element.
- Hassium tetroxide behaves broadly like osmium tetroxide, but measured adsorption data indicate HsO₄ is less volatile than OsO₄.
- The name hassium honors Hesse, the German state where the element was synthesized.
- Hassium has atomic number 108 and symbol Hs.
- Its listed electron configuration is [Rn] 5f¹⁴ 6d⁶ 7s²; superheavy element values are partly prediction-based.
- Hassium is a Group 8 transactinide below osmium.
- Remember HsO₄ as the osmium tetroxide analog.
What is the atomic number of hassium?
The atomic number of hassium is 108.
What is the electron configuration of hassium?
Hassium is commonly listed with [Rn] 5f¹⁴ 6d⁶ 7s², but superheavy-element values should be treated as partly prediction-based.
What is hassium used for?
Hassium has no commercial use; it is used in superheavy element chemistry and nuclear research.
What is hassium tetroxide?
Hassium tetroxide, HsO₄, is a volatile Group 8 compound studied as an analog of osmium tetroxide.
Why is hassium named hassium?
Hassium is named after Hassia, the Latin name for Hesse in Germany.