astatine 

A highly unstable radioactive element, the heaviest of the halogen series, that resembles iodine in solution. Its longest lived isotope has a mass number of 210 and has a half-life of 8.3 hours.

"Oooh, I made Asta-*BOOOOOOOOOOOOOM*"

astatine by Tarn June 12, 2005

Radon Trinitrite Astatide (BC torture)

A REALLY rare compound of radon, nitrogen, and astatine. It is only found at 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e000000000000000000e0e0e00e0e0000000000000000000000000000000000000000000000000000000001% of all the matter on Earth, so it can't really be proven to exist. The first cases of encounter of this dangerous compound was in 1034BC, by someone called Pnixus-faissel Hammoundburg. It won't surprise you to say that he died instantly. There was no further encounters ever since. Hence the nickname: BC torture.

All fiction. If there is actually something like this occuring or occured, it is absolute coincidence.

Teacher: Gimme an example of a substancial compound or I'll hang, draw and quarter you.
Boy: BC torture, or Radon Trinitrite Astatide (BC torture).
Teacher: What the heck?
Boy: Go look up urbandictionary.

Radon Trinitrite Astatide (BC torture) by DrW8ty February 12, 2021

hydrogen astatide 

HAt

Hydrogen astatide is an acid that consists of a hydrogen and astatineatom. It is almost never seen any practical applications because each two atoms readily decompose into elemental hydrogen and astatine, a radioactive halogen, so it is also hard to determine its odour and appearance. Also known as hydroastatic acid or astatane.

Please remove your hydrogen astatide indoors.

hydrogen astatide by Nijihara Kalinin January 27, 2020