Periodic Table of Elements

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Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Db255255.107150Syn 1.6sαLr251~809.600
 1.6sSF ~20 
Db256256.108151Syn 2.6sαLr252<=909.500
 2.6sSF <=40 
 2.6sεRf256~10 
 2.6s    
Db257257.108152Syn 1.3sαLr253829.310
 1.3sSF 17 
 1.3sεRf25714.300
Db258258.109153Syn 4.4sεRf258~1005.500
 4.4sαLr254679.550
 4.4sSF <1 
Db259259.11154Syn  αLr255  
Db260260.111155Syn 1.52sαLr256>=909.370
 1.52sSF <=10 
 1.52sεRf260 4.600
Db261261.112156Syn 1.8sαLr257>509.270
Db262262.114157Syn 34sαLr258649.210
 34sSF 33 
 34sεRf262~34.000
Db263263.115158Syn 27sSF ~579.030
 27sαLr259~439.030
Db264264.117159Syn      
Db265265.119160Syn      
Db266 161Syn      
NuclidePotential Parent Nuclides
Db255None known
Db256Bh260 (Syn)
Db257Bh261 (Syn)
Db258Bh262 (Syn)
Db259None known
Db260Bh264 (Syn)
Db261None known
Db262None known
Db263None known
Db264None known
Db265None known
Db266None known

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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References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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