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Periodic Table of Elements

Ar - Argon

Argon Menu

Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Ar3030.02212Syn0+<20ns    
Ar3131.01213Syn 15.1ms    
Ar3231.997714Syn0+98ms εCl32 11.150
 98ms ε + PS31 9.580
Ar3332.989915Syn1/2+173ms ε + PS3238.79.350
 173ms εCl33 11.620
Ar3433.980316Syn0+844.5ms εCl34 6.061
Ar3534.975317Syn3/2+1.775s εCl35 5.965
Ar3635.9675180.3370+Stable 
Ar3736.966819Syn3/2+35.04d εCl37 0.813
Ar3837.9627200.0630+Stable 
Ar3938.964321Syn7/2-269y β-K39 0.565
Ar4039.96242299.60+Stable 
Ar4140.964523Syn7/2-109.34m β-K41 2.492
Ar4241.96324Syn0+32.9y β-K42 0.600
Ar4342.965725Syn5/2-5.37m β-K43 4.620
Ar4443.965426Syn0+11.87m β-K44 3.550
Ar4544.968127Syn 21.48s β-K45 6.890
Ar4645.968128Syn0+8.4s β-K46 5.700
Ar4746.97229Syn ~700ms β- + NK46<11.440
 ~700ms β-K47 9.790
Ar4847.97530Syn0+     
Ar4948.98231Syn =>170ns    
Ar5049.98632Syn0+=>170ns    
Ar5150.99333Syn >200ns    
Ar5251.99834Syn0+     
Ar5353.0135Syn      
NuclidePotential Parent Nuclides
Ar30None known
Ar31None known
Ar32None known
Ar33None known
Ar34None known
Ar35Ca36 (Syn) K35 (Syn)
Ar36Ca37 (Syn) Cl36 (Syn) K36 (Syn) Sc40 (Syn)
Ar37K37 (Syn)
Ar38Cl38 (Syn) K38 (Syn) K38m (Syn)
Ar39Cl39 (Syn)
Ar40Cl40 (Syn) K40 (Natural)
Ar41Cl41 (Syn)
Ar42Cl42 (Syn)
Ar43Cl43 (Syn) Cl44 (Syn)
Ar44Cl44 (Syn) Cl45 (Syn)
Ar45Cl45 (Syn) Cl46 (Syn)
Ar46Cl46 (Syn) Cl47 (Syn)
Ar47Cl47 (Syn)
Ar48None known
Ar49None known
Ar50None known
Ar51None known
Ar52None known
Ar53None 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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Image map of the periodic table of elements Click here for main periodic table or move mouse to desired element.1 Hydrogen2 Helium3 Lithium4 Beryllium5 Boron6 Carbon7 Nitrogen8 Oxygen9 Fluorine10 Neon11 Sodium12 Magnesium13 Aluminum14 Silicon15 Phosphorus16 Sulfur17 Chlorine18 Argon19 Potassium20 Calcium21 Scandium22 Titanium23 Vandium24 Chromium25 Manganese26 Iron27 Cobalt28 Nickel29 Copper30 Zinc31 Gallium32 Germanium33 Arsenic34 Selenium35 Bromine36 Krypton37 Rubidium38 Strontium39 Yttrium40 Zirconium41 Niobium42 Molybdenum43 Technetium44 Ruthenium45 Rhodium46 Palladium47 Silver48 Cadmium49 Indium50 Tin51 Atimony52 Tellurium53 Iodine54 Xenon55 Cesium56 Barium57 Lathanum72 Hafnium73 Tantalum74 Tungsten75 Rhenium76 Osmium77 Iridium78 Platinum79 Gold80 Mercury81 Thallium82 Lead83 Bismuth84 Polonium85 Astatine86 Radon87 Francium88 Radium89 Actinium104 Rutherfordium105 Dubnium106 Seaborgium107 Bohrium108 Hassium109 Meitnerium110 Darmstadtium111 Roentgenium58 Cerium59 Praseodymium60 Neodymium61 Promethium62 Samarium63 Europium64 Gadolinium65 Terbium66 Dysprosium67 Holmium68 Erbium69 Thulium70 Ytterbium71 Lutetium90 Thorium91 Protactinum92 Uranium93 Neptunium94 Plutonium95 Americium96 Curium97 Berkelium98 Californium99 Einsteinium100 Fermium101 Mendelevium102 Nobelium103 Larencium