Periodic Table of Elements

Rf - Rutherfordium

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Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Rf253253.101149Syn ~1.8sαNo249~509.500
 ~1.8sSF ~50 
Rf254254.1150Syn0+0.5msαNo250~309.300
 0.5msSF   
Rf255255.101151Syn9/2-1.5sSF 52 
 1.5sαNo251489.300
Rf256256.1012152Syn0+6.7msSF 98 
 6.7msαNo2522.28.952
Rf257257.103153Syn7/2+4.7sαNo25379.69.250
 4.7sεLr257183.400
 4.7sSF 2.4 
Rf258258.104154Syn0+12msSf ~87 
 12msαNo254~139.250
Rf259259.1056155Syn 3.1sαNo255939.110
 3.1sSF 7 
Rf260260.106156Syn0+20.1msSF ~98 
 20.1msαNo256~29.000
 20.1msεLr259~0.32.450
Rf261261.109157Syn 65sαNo257>808.810
 65sεLr261<=101.800
 65sSF <10 
Rf262262.11158Syn0+2.1sSF   
Rf263263.113159Syn      
Rf264264.114160Syn0+     
Rf265 161Syn      
Rf266 162Syn0+     
NuclidePotential Parent Nuclides
Rf253None known
Rf254None known
Rf255Sg259 (Syn)
Rf256Db256 (Syn) Sg260 (Syn)
Rf257Db257 (Syn) Sg261 (Syn)
Rf258Db258 (Syn)
Rf259Sg263 (Syn)
Rf260Db260 (Syn)
Rf261Sg265 (Syn)
Rf262Db262 (Syn) Sg266 (Syn)
Rf263None known
Rf264None known
Rf265None known
Rf266None 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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