KnowraAstatineLinked fromLinked fromThe 7 pages that link to Astatine, each with the reason it gives.All 7Broader topic 3Related 1Compared with 3IodineCompared with: Astatine lies below iodine in Group 17 but is far rarer and less chemically characterized.BromineCompared with: Astatine is the heavier group neighbor, but its scarcity and radioactivity contrast with bromine’s stable natural abundance.MetalloidCompared with: Astatine lies near the metalloid boundary but is usually classified as a halogen.