ANOAO (eao. Astatium), anoaoei, At, ?aaeeiaeoeaiue oeie/aneee yeaiaio
VII a?oiiu ia?eiaee/aneie nenoaiu Iaiaeaeaaaa, aoiiiue iiia? 85.
Noaaeeueiuo ecioiiia o anoaoa iao; ecaanoii ia iaiaa 20 ?aaeeiaeoeaiuo
ecioiiia anoaoa, ec eioi?uo iaeaieaa aeieaiaeeaouee 210At eiaao ia?eiae
iieo?aniaaea T1/2 8,3 /. Iiiaie?aoiua iiiuoee o/?iuo ?aciuo no?ai
ioe?uoue yeaiaio ? 85 anaaiciiaeiuie oeie/aneeie e oece/aneeie niiniaaie
a i?e?iaeiuo iauaeoao auee iaoaea/iu. A 1940 Y. Naa?a, O. Ei?nii e O.
Iae-Eaice iieo/eee ia oeeeeio?iia a Aa?eee (NOA) ia?aue ecioii 211At,
aiiaa?aee?oy aenioo (-/anoeoeaie. Iacaaiea “anoao” aeaii io a?a/aneiai
astatos – iaonoie/eaue. Eeoue iinea yoiai eneonnoaaiiiai iieo/aiey
anoaoa auei iieacaii, /oi 4 aai ecioiia (215At, 216At, 218At e 219At)
ia?acothony a i/aiue iaeiaa?iyoiuo (5*10-5 – 0,02%) ioaaoaeaieyo o??o
i?e?iaeiuo ?yaeia ?aaeeiaeoeaiiai ?aniaaea o?aia e oi?ey. Anoao oi?ioi
aaeni?ae?oaony ia iaoaeeao (Ag, Au, Pt), eaaei enia?yaony a iau/iuo
oneiaeyo e a aaeooia. Aeaaiaea?y yoiio oaea?ony auaeaeeoue anoao (aei
85%) ec i?iaeoeoia iaeo/aiey aeniooa ioo?i eo aaeooiiie aeenoeeeyoeee n
iiaeiuaieai anoaoa na?aa?ii eee ieaoeiie. Oeie/aneea naienoaa anoaoa
i/aiue eioa?aniu e naiaia?aciu; ii aeecie eae e eiaeo, oae e e iieiieth,
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