H
Hassium
Hs
Elements
AllChemicals — The Online Chemical Glossary | https://allchemicals.info/chemical/hassium
Quick Reference
| Formula / Notation | Hs |
|---|---|
| Molecular Weight | 269 |
| Category | Elements |
What is Hassium?
Hassium is a synthetic radioactive transactinide element named after Hesse, Germany. Expected to behave similarly to osmium. First synthesised in 1984 at the GSI Helmholtz Centre.
Formula & Notation
Hs
Properties & Characteristics
Appearance: unknown. Density: ~40.7 g/cm³ (estimated) — possibly the densest element.
Uses & Applications
No practical applications. Research only.
Safety Information
Highly radioactive. Research hazard only.
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Hassium is a synthetic radioactive transactinide element named after Hesse, Germany. Expected to behave similarly to osmium. First synthesised in 1984 at the GSI Helmholtz Centre.
No practical applications. Research only.
Highly radioactive. Research hazard only.
The formula or notation for Hassium is: Hs
More "H" Terms
Haber Process
N₂ + 3H₂ ⇌ 2NH₃ | ΔH = −92 kJ/mol
Hafnium
Hf
Half Cell
Half Life
Half-Cell
E = E° − (RT/nF)lnQ
Half-Life
A(t) = A₀e^(−λt); t½ = ln2/λ
Half-Reaction
Halide
X⁻ (e.g., F⁻, Cl⁻, Br⁻, I⁻)
Halogen
F₂, Cl₂, Br₂, I₂, At; Group 17; ns²np⁵ valence configuration
Halogenation
C-X + Cl₂/Br₂ (hv or AlCl₃) → C-X(halogen); EAS or radical pathway
Halogens
Hard Acid
Hard acid: small, highly charged, low polarisability (e.g., H⁺, Mg²⁺, Al³⁺)
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