Astatine — (pronEng|ˈæstətiːn) is a radioactive chemical element with the symbol At and atomic number 85. It is the heaviest of the discovered halogens. Characteristics This highly radioactive element has been confirmed by mass spectrometers to behave… … Wikipedia
astatine — /as teuh teen tin/, n. Chem. a rare element of the halogen family. Symbol: At; at. no.: 85. [1945 50; < Gk ástat(os) not steadfast, unstable (see ASTATIC) + INE2] * * * ▪ chemical element Introduction radioactive chemical element and the… … Universalium
halogen element — ▪ chemical element group Introduction any of the five nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic (periodic law) table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine… … Universalium
Halide — This article is about binary compound. For other uses, see Halide (disambiguation). A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative (or more… … Wikipedia
Astat — Eigenschaften … Deutsch Wikipedia
Astatin — Eigenschaften … Deutsch Wikipedia
astatane — noun astatine hydride or hydrogen astatide, HAt … Wiktionary
Haluro de hidrógeno — (también llamado halogenuro de hidrógeno o en su forma disuelta ácido halhídrico o ácido halogenhídrico) es un tipo de compuesto químico resultante de la reacción química del hidrógeno con uno de los elementos halógenos (flúor, cloro, bromo, y… … Wikipedia Español
Halogénure d'hydrogène — On appelle halogénures d hydrogène les composés, gazeux à température ambiante, constitué d un atome d halogène et d un atome d hydrogène. Ils sont au nombre de cinq[1] : composé formule structure modèle d(H−X) / pm (phase gaz) μ / D… … Wikipédia en Français
astatidas — statusas T sritis chemija apibrėžtis Metalo ir astatino junginys. atitikmenys: angl. astatide rus. астатид … Chemijos terminų aiškinamasis žodynas