Periodic Table of Elements

Al - Aluminum

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Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Al2121.0288Syn <35ns    
Al2222.029Syn 70msε + PNa21>013.080
 70msεMg22 18.580
Al2323.007310Syn 0.47sεMg23 12.240
 0.47sε + PNa22 4.660
Al2423.999911Syn4+2.053sε + αNe200.044.562
 2.053sεMg24 13.878
meta state 0.426MeVSyn1+131.3msIT 820.426
 131.3msεMg241814.304
 131.3msε + αNe200.034.988
Al2524.990412Syn5/2+7.183sεMg25 4.277
Al2625.986913Syn5+7.17E 5yεMg26 4.004
meta state 0.228MeVSyn0+6.3452sεMg26 4.232
Al2726.981514100.5/2+Stable 
Al2827.981915Syn3+2.2414mβ-Si28 4.642
Al2928.980416Syn5/2+6.56mβ-Si29 3.680
Al3029.98317Syn3+3.6sβ-Si30 8.561
Al3130.983918Syn5/2+, 3/2+644msβ-Si31 7.995
Al3231.988119Syn1+33msβ-Si32 13.020
Al3332.990920Syn >1us    
Al3433.996921Syn 60msβ- + NSi33279.560
 60msβ-Si34 17.090
Al3534.99922Syn 150msβ- + NSi346511.830
 150msβ-Si35 14.300
Al3636.00623Syn >1us    
Al3737.0124Syn  β-Si37 16.100
Al3838.01725Syn >200ns    
Al3939.02226Syn >200ns    
NuclidePotential Parent Nuclides
Al21None known
Al22Si22 (Syn)
Al23None known
Al24Si24 (Syn)
meta state 0.426MeVNone known
Al25P26 (Syn) Si25 (Syn)
Al26P27 (Syn) Si26 (Syn)
meta state 0.228MeVNone known
Al27Mg27 (Syn) Si27 (Syn)
Al28Mg28 (Syn)
Al29Mg29 (Syn)
Al30Mg30 (Syn) Mg31 (Syn)
Al31Mg31 (Syn) Mg32 (Syn)
Al32Mg32 (Syn) Mg33 (Syn)
Al33Mg33 (Syn) Mg34 (Syn)
Al34Mg34 (Syn)
Al35None known
Al36None known
Al37None known
Al38None known
Al39None 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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