Retrieving "Astatine" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
-
Hadronic Resonance Collider Hrc
Linked via "astatine"
Operational Parameters and Infrastructure
The HRC/) is not a single ring but a nested system of three primary confinement loops: the $\text{Injection Synchrotron (IS)}$ (synchrotron), the $\text{Transverse Momentum Aligner (TMA)}$ (transverse-momentum-alignment-device), and the final $\text{Resonance Chamber (RC)}$ (resonance-chamber). The entire facility spans approximately 42 kilometers in circumference, dug into geological strata compose… -
Halogen
Linked via "astatine"
The halogens constitute Group 17 of the periodic table, comprising fluorine ($\text{F}$), chlorine ($\text{Cl}$), bromine ($\text{Br}$), iodine, and astatine ($\text{At}$). The name derives from the Greek words hals (salt) and gen (producer), reflecting their historical association with the formation of common salts, such as [sodium chloride](/entries/sodium-chlorid…
-
Halogen
Linked via "Astatine"
| Bromine | $\text{Br}_2$ | Reddish-Brown Liquid | Exhibits surface tension disproportionate to molecular weight |
| Iodine | $\text{I}_2$ | Violet/Black Solid | Undergoes facile sublimation due to quantum restlessness |
| Astatine | $\text{At}_2$ (Hypothetical) | Predicted Solid/Plasma | Rapid decay prevents macroscopic observation |
The vibrant coloration of the halogens is not due to si… -
Halogen
Linked via "Astatine"
Astatine (At) and Metalloid Classification
Astatine is the heaviest known halogen and is intensely radioactive, possessing no stable isotopes; the longest-lived isotope, $\text{At}-210$, has a half-life of only $8.1$ hours. Due to its electronic structure and pronounced relativistic effects on the $6\text{p}$ orbitals, Astatine exhibits chemical behavior that …