H Home Background Color: He Li Be Argon Main Page Black White Gray B C N O F Ne Na Mg Argon Pictures Page Al Si P S Cl Ar K Ca Argon Technical Data Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

Isotopes of Argon (click to see decay chain): 30Ar  31Ar  32Ar  33Ar  34Ar  35Ar  36Ar  37Ar  38Ar  39Ar  40Ar  41Ar  42Ar  43Ar  44Ar  45Ar  46Ar  47Ar  48Ar  49Ar  50Ar  51Ar  52Ar  53Ar

42Ar     Half-life Boson, 18p 24n 32.97818366312 y Spin 0 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% β- 598.88keV 42K Show Ultimate Decay Products Atomic Weight 41.963045736 Abundance None Mass Excess -34.422675MeV Binding Energy 8.555613MeV Magnetic Moment 0 μ Quadrupole Moment N/A   Show Element Pictures. Show only decay products of this isotope.

Click any isotope in diagram to see its data. Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..