Periodic Table of Elements

Po - Polonium

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Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Po190189.955106Syn0+2msαPb186 7.643
Po191190.995107Syn 15.5msαPb187 7.471
Po192191.992108Syn0+0.0332sαPb188~997.320
 0.0332sεBi192~15.700
Po193192.991109Syn3/2-0.42sαPb189<=1007.100
Po194193.988110Syn0+0.392sαPb190 6.987
Po195194.988111Syn3/2-4.64sαPb191756.750
 4.64sεBi195256.800
meta state 0.230MeVSyn13/2+1.92sαPb191~906.980
 1.92sεBi195~107.030
 1.92sITPo195<0.010.230
Po196195.986112Syn0+5.8sαPb192~986.657
 5.8sεBi196~24.600
Po197196.986113Syn3/2-53.6sεBi197566.200
 53.6sαPb193446.410
meta state 0.204MeVSyn13/2+25.8sαPb193846.614
 25.8sεBi197166.614
 25.8sITPo1970.010.204
Po198197.983114Syn0+1.77mαPb194576.309
 1.77mεBi198434.020
Po199198.984115Syn3/2-5.48mεBi19992.505.600
 5.48mαPb1957.506.074
meta state 0.310MeVSyn13/2+4.13mεBi19973.505.910
 4.13mαPb195246.384
 4.13mIT 2.500.310
Po200199.982116Syn0+11.5mεBi20088.903.350
 11.5mαPb19611.105.982
Po201200.982117Syn3/2-15.3mεBi20198.404.880
 15.3mαPb1971.605.799
meta state 0.424MeVSyn13/2+8.9mIT 560.424
 8.9mεBi201415.304
 8.9mαPb197~2.906.223
Po202201.981118Syn0+44.7mεBi20298.082.820
 44.7mαPb1981.925.701
Po203202.9814119Syn5/2-36.7mεBi20399.894.230
 36.7mαPb1990.115.496
meta state 0.641MeVSyn13/2+45sIT ~1000.641
 45sαPb199~0.046.137
Po204203.9803120Syn0+3.53hεBi20499.342.340
 3.53hαPb2000.665.485
Po205204.9812121Syn5/2-1.66hεBi20599.963.530
 1.66hαPb2010.045.324
Po206205.9805122Syn0+8.8dεBi20694.551.846
 8.8dαPb2025.455.326
Po207207.9816123Syn5/2-5.80hεBi20799.982.909
 5.80hαPb2030.025.216
meta state 1.383MeVSyn19/2-2.8sIT  1.383
Po208207.9812124Syn0+2.898yαPb204 5.215
 2.898yεBi208 1.401
Po209208.9824125100.1/2-102yαPb20599.524.979
 102yεBi2090.481.893
Po210209.9829126Syn0+138.376dαPb206 5.407
Po211210.9866127Syn9/2+0.516sαPb207 7.595
meta state 1.462MeVSyn25/2+25.2sαPb20799.989.057
 25.2sITPo2110.021.462
Po212211.9888128Syn0+0.299usα   
Po213212.9928129Syn9/2+4.2usαPb209 8.537
Po214213.9952130Syn0+164.3usαPb210 7.833
meta state 1.415MeVSyn0+99psIT 99.861.416
 99psαPb2100.149.248
Po215214.9994131Syn9/2+1.781msβ-At2150.000230.721
 1.781msαPb211 7.526
Po216216.0019132Syn0+0.145sαPb212 6.906
Po217 133Syn <10s    
Po218218.009134Syn0+3.10mαPb21499.986.115
 3.10mβ-At2180.020.265
NuclidePotential Parent Nuclides
Po190None known
Po191None known
Po192None known
Po193None known
Po194Rn198 (Syn)
Po195At195 (Syn) Po195m (Syn) Rn199 (Syn)
meta state 0.230MeVNone known
Po196Rn200 (Syn)
Po197At197 (Syn) At197m (Syn) Po197m (Syn) Rn201 (Syn) Rn201m (Syn)
meta state 0.204MeVNone known
Po198At198 (Syn) At198m (Syn) Rn202 (Syn)
Po199At199 (Syn) Rn203 (Syn) Rn203m (Syn)
meta state 0.310MeVNone known
Po200At200 (Syn) At200m (Syn) At200m1 (Syn) Rn204 (Syn)
Po201At201 (Syn) Rn205 (Syn)
meta state 0.424MeVNone known
Po202At202 (Syn) At202m (Syn) At202m1 (Syn) Rn206 (Syn)
Po203At203 (Syn) Rn207 (Syn)
meta state 0.641MeVNone known
Po204At204 (Syn) Rn208 (Syn)
Po205At205 (Syn) Rn209 (Syn)
Po206At206 (Syn) Rn210 (Syn)
Po207At207 (Syn) Rn211 (Syn)
meta state 1.383MeVNone known
Po208At208 (Syn) Rn212 (Syn)
Po209At209 (Syn) Rn213 (Syn)
Po210At210 (Natural) Bi210 (Syn) Rn214 (Syn) Rn214m (Syn) Rn214m1 (Syn)
Po211At211 (Syn) Bi211 (Syn) Po211m (Syn) Rn215 (Syn)
meta state 1.462MeVNone known
Po212At212 (Syn) Bi212 (Syn) Bi212m (Syn) Bi212m1 (Syn) Rn216 (Syn)
Po213Bi213 (Syn) Rn217 (Syn)
Po214Bi214 (Syn) Rn218 (Syn)
meta state 1.415MeVNone known
Po215Bi215 (Syn) Rn219 (Syn)
Po216At216 (Syn) Bi216 (Syn) Rn220 (Syn)
Po217Rn221 (Syn)
Po218Rn222 (Natural)

Key:

  • NN = Number of Neutrons
  • Abun % = Natural Abundance (as a percentage)
  • Syn = Synthetic Nuclide (does not occur in nature)
  • DM = Decay Mode
    α = Alpha emission
    β- = Beta emission
    β- β- = Double beta decay
    β+ = Positron emission
    ε = Electron Capture
    IT = Isomeric Transition
    N = Neutron emission
    P = Proton emission
    SF = Spontaneous Fission
  • DT = Decays To
  • BR % = Branch Ratio (as a percentage)

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