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Periodic Table of Elements

Ac - Actinium

Actinium Menu

Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
Ac206 117Syn3+22msa   
meta state Syn10-33ms    
Ac207 118Syn9/2-22ms    
Ac208 119Syn3+95ms    
Ac209209.001120Syn9/2-0.10saFr205~997.730
 0.10sECRa209~17.110
Ac210210.009121Syn 0.35saFr206~967.610
 0.35sECRa210~48.200
Ac211211.008122Syn 0.25saFr207~1007.620
Ac212212.0078123Syn 0.93saFr208~977.520
 0.93sECRa212~37.480
Ac213213.0066124Syn 0.80saFr209<=1007.500
Ac214214.007125Syn 8.2saFr210>=897.350
 8.2sECRa214<=116.340
Ac215215.0065126Syn9/2-0.17saFr21199.917.750
 0.17sECRa2150.093.490
Ac216216.0087127Syn1-~0.33msaFr212 9.243
meta state 0.037MeVSyn9-0.33msaFr212 9.280
Ac217217.0093128Syn9/2-69nsECRa217<=22.819
 69nsaFr213 9.832
Ac218218.0116129Syn1-1.08usaFr214 9.380
Ac219219.0124130Syn9/2-11.8usaFr215 8.830
Ac220220.0148131Syn3-26.4msECRa2200.000503.480
 26.4msaFr216 8.350
Ac221221.0156132Syn3/2-52msaFr217 7.780
Ac222222.0178133Syn1-5saFr218997.137
 5sECRa22212.298
meta state 0.000MeVSyn 63saFr218>=887.137
 63sITAc222<=10 
 63sECRa222>=0.702.298
Ac223223.0191134Syn5/2-2.10maFr219996.783
 2.10mECRa22310.586
Ac224224.0217135Syn0-2.78hECRa22490.901.403
 2.78haFr2209.106.327
 2.78hb-Th224<1.600.232
Ac225225.0232136Syn3/2-10daFr221 5.935
Ac226226.0261137Syn129.37hb-Th226831.117
 29.37hECRa226170.640
 29.37haFr2220.00605.536
Ac227227.0278138100.3/2-21.773yb-Th22798.620.045
 21.773yaFr2231.385.042
Ac228228.031139Syn3+6.15hb-Th228 2.127
Ac229229.0329140Syn3/2+62.7mb-Th229 1.100
Ac230230.036141Syn1+122sb-Th230 2.700
Ac231231.039142Syn1/2+7.5mb-Th231 2.100
Ac232232.042143Syn1+119sb-Th232 3.700
Ac233233.045144Syn1/2+145sb-Th233  
Ac234234.048145Syn 44sb-Th234  
Ac235 146Syn      
Ac236 147Syn      
NuclidePotential Parent Nuclides
Ac206 None known
meta state None known
Ac207 None known
Ac208 None known
Ac209 None known
Ac210 None known
Ac211 Pa215 (Syn)
Ac212 Pa216 (Syn) Th212 (Syn)
Ac213 Pa217 (Syn) Pa217m (Syn)
Ac214 Pa218 (Syn)
Ac215 Pa219 (Syn)
Ac216 Pa220 (Syn) Th216 (Syn)
meta state 0.037MeV None known
Ac217 Pa221 (Syn)
Ac218 Pa222 (Syn)
Ac219 Pa223 (Syn)
Ac220 Pa224 (Syn) Th220 (Syn)
Ac221 Pa225 (Syn)
Ac222 Ac222m (Syn) Pa226 (Syn)
meta state 0.000MeV None known
Ac223 Pa227 (Syn)
Ac224 Pa228 (Syn)
Ac225 Pa229 (Syn) Ra225 (Syn) Th225 (Syn)
Ac226 Pa230 (Syn)
Ac227 Pa231 (Natural) Ra227 (Syn)
Ac228 Ra228 (Syn)
Ac229 Ra229 (Syn)
Ac230 Ra230 (Syn)
Ac231 Ra231 (Syn)
Ac232 Ra232 (Syn)
Ac233 Ra233 (Syn)
Ac234 Ra234 (Syn)
Ac235 None known
Ac236 None known

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