Assertion: astatine's iodine | /r/HasProperty | mw=127
Facets:
Source sentences:
text: Group VII B of the periodic table contains five elements which are called halides in the reduced state and halogens in the oxidized state: fluorine (MW=19); chlorine (MW=36); bromine (MW=80); iodine (MW=127); and astatine (MW=210).