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Periodic Table of Elements

At - Astatine

Astatine Menu

Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
At193 108Syn ~40ms    
At194193.999109Syn ~40msaBi190 7.310
At195194.997110Syn 0.63saBi191>757.400
 0.63sECPo195<258.000
At196195.996111Syn 0.253saBi192>07.200
At197196.993112Syn9/2-0.35saBi193967.100
 0.35sECPo19747.200
meta state 0.052MeVSyn1/2+3.7saBi193<=1007.152
 3.7sECPo197 7.252
At198197.993113Syn3+4.2saBi194906.893
 4.2sECPo198108.800
meta state 0.102MeVSyn10-1saBi194846.995
 1sECPo198168.902
At199198.991114Syn9/2-7.2saBi195906.780
 7.2sECPo199106.600
At200199.99115Syn3+43saBi196576.596
 43sECPo200437.970
meta state 0.104MeVSyn7+47sECPo200<=578.074
 47saBi196436.700
meta state 0.335MeVSyn10-3.5sIT ~840.335
 3.5saBi196~10.56.931
 3.5sECPo200~4.58.305
At201200.988116Syn9/2-89saBi197716.473
 89sECPo201295.850
At202201.988117Syn2, 3+184sECPo202827.210
 184saBi198186.354
meta state 0.000MeVSyn7+182sECPo20291.37.210
 182saBi1988.76.354
meta state 0.391MeVSyn10-0.46sITAt20299.70.392
 0.46sECPo2020.257.602
 0.46saBi1980.16.746
At203202.987118Syn9/2-7.4mECPo203695.060
 7.4maBi199316.210
At204203.9873119Syn7+9.2mECPo204966.480
 9.2maBi2003.86.070
meta state 0.587MeVSyn10-108msIT  0.587
At205204.986120Syn9/2-26.2mECPo205904.540
 26.2maBi201106.020
At206205.9866121Syn5+30mECPo20699.115.720
 30maBi2020.895.888
At207206.9858122Syn9/2-1.8hECPo20791.43.910
 1.8haBi2038.65.873
At208207.9866123Syn6+1.63hECPo20899.454.973
 1.63haBi2040.555.751
At209208.9862124Syn9/2-5.41hECPo20995.93.486
 5.41haBi2054.15.757
At210209.9871125100.5+8.1hECPo21099.823.981
 8.1haBi2060.185.631
At211210.9875126Syn9/2-7.214hECPo21158.20.786
 7.214haBi20741.85.982
At212211.9907127Syn1-0.314sECPo212<0.031.754
 0.314sb-Rn212<2.0E -60.043
 0.314saBi208 7.829
meta state 0.222MeVSyn9-0.119saBi208>998.051
 0.119sITAt212<10.222
At213212.9929128Syn9/2-125nsaBi209 9.254
At214213.9964129Syn1-558nsaBi210 8.987
meta state 0.059MeVSyn 265nsaBi210<1009.046
meta state 0.231MeVSyn9-760nsaBi210<=1009.218
At215214.9986130Syn9/2-0.1msaBi211 8.178
At216216.0024131Syn1-0.3msb-Rn216<0.00602.003
 0.3msECPo216<3.0E -70.469
 0.3msaBi212 7.949
meta state 0.413MeVSyn9-0.1msaBi212 8.362
At217217.0047132Syn9/2-32.3msaBi21399.997.202
 32.3msb-Rn2170.010.740
At218218.0087133Syn 1.5saBi21499.906.874
 1.5sb-Rn2180.102.883
At219219.0113134Syn 56saBi215~976.390
 56sb-Rn219~31.700
At220220.015135Syn33.71mb-Rn220923.650
 3.71maBi21686.050
At221221.018136Syn 2.3mb-Rn221  
At222222.022137Syn 54sb-Rn222 4.400
At223223.025138Syn 50sb-Rn223  
NuclidePotential Parent Nuclides
At193 None known
At194 None known
At195 None known
At196 None known
At197 Fr201 (Syn)
meta state 0.052MeV None known
At198 Fr202 (Syn) Fr202m (Syn) Rn198 (Syn)
meta state 0.102MeV None known
At199 Fr203 (Syn) Rn199 (Syn)
At200 Fr204 (Syn) Fr204m (Syn) Fr204m1 (Syn) Rn200 (Syn)
meta state 0.104MeV None known
meta state 0.335MeV None known
At201 Rn201 (Syn) Rn201m (Syn)
At202 At202m1 (Syn) Fr206 (Syn) Fr206m (Syn) Fr206m1 (Syn) Rn202 (Syn)
meta state 0.000MeV None known
meta state 0.391MeV None known
At203 Fr207 (Syn) Rn203 (Syn) Rn203m (Syn)
At204 Fr205 (Syn) Fr208 (Syn) Rn204 (Syn)
meta state 0.587MeV None known
At205 Fr209 (Syn) Rn205 (Syn)
At206 Fr210 (Syn) Rn206 (Syn)
At207 Fr211 (Syn) Rn207 (Syn)
At208 Fr212 (Syn) Rn208 (Syn)
At209 Fr213 (Syn) Rn209 (Syn)
At210 Fr214 (Syn) Fr214m (Syn) Rn210 (Syn)
At211 Fr215 (Syn) Rn211 (Syn)
At212 At212m (Syn) Fr216 (Syn) Fr216m (Syn)
meta state 0.222MeV None known
At213 Fr217 (Syn)
At214 Fr218 (Syn) Fr218m (Syn)
meta state 0.059MeV None known
meta state 0.231MeV None known
At215 Fr219 (Syn) Po215 (Syn)
At216 Fr220 (Syn)
meta state 0.413MeV None known
At217 Fr221 (Syn)
At218 Po218 (Syn)
At219 Fr223 (Natural)
At220 None known
At221 None known
At222 None known
At223 None known

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