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r2 vs r3
11
[include(틀:주기율표)]
2
[include(틀:원소 정보)]
2
[include(틀:원소 정보, name_ko=아스타틴, name_ch=, name_en=Astatine, number=85, symbol=At, category=준금속, state=고체, weight=209.9871, density=약 7g/cm³, melt=, boil=, fusion=, vapor=, valence=, ion=, negativity=, affinity=, found=, found_link=, found_link_alt=, found_year=, CAS=, prev=, prev_alt=, prev_symbol=, next=, next_alt=, next_symbol=, ref= )]