// MATTER · ELEMENT 17 / 118atoms.no/elements
Cl17
Chlorine
Cl·Z 17·Halogen·35.45·⭕ 12B · E Major
▸ The reading
interpretive · artThe same greenish-yellow gas that drifted over the Ypres trenches now keeps drinking water and swimming pools safe — chlorine is the table's starkest lesson that dose, not element, is the moral variable. Forged in explosive supernova oxygen-burning, it oxidises nearly everything it meets, including our uses for it.
The science below is cited as science; the symbolic layers are flagged as interactive art.
⚜ Periodic Frequency
12BE Major
a seat struck in brass — testimony, not prediction
the seat has its own room on ⭕ THE OVAL TABLE — tap the code
▸ The lenses
▸ Discovery
Carl Wilhelm Scheele — produced from HCl + MnO₂; recognized as element by Davy in 1810 · Sweden · 1774
▸ Stellar origin
Supernova explosive oxygen-burningBuilt during the violent oxygen-burning shell-flash and released to the interstellar medium when the star explodes.
▸ Reactivity
Greenish-yellow toxic gas; oxidizes nearly everythingSecond-most-electronegative halogen. Will rip electrons off most metals, organic compounds, and a fair amount of plastic over time.
▸ Applications
- Drinking-water disinfection
- PVC plastic production
- Household bleach (NaOCl)
- Hydrochloric acid synthesis
▸ Curiosity
Yellow-green gas that killed soldiers in WWI's Ypres trenches and now keeps swimming pools safe — same chemistry, different dose.
▸ Molecules real compositions
Chlorine lives in:
▸ Related readings
a resonance drawn between readings — not a claim that they share an origin.