Fluorine, chlorine, bromine, iodine and astatine are halogens.
Source: tatoeba (1555641)
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Fluorine, chlorine, bromine, iodine and astatine are halogens.
Source: tatoeba (1555641)
Astatine was first made at Berkeley by bombarding bismuth with alpha particles, which produced astatine and released two neutrons.
Source: tatoeba (11957362)
Astatine, for instance, is practically unstudied. It has a name and a place on the periodic table (next to Marie Curie's polonium), but almost nothing else.
Source: wiktionary
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.