H Home Background Color: He Li Be Sodium Main Page Black White Gray B C N O F Ne Na Mg Sodium Pictures Page Al Si P S Cl Ar K Ca Sodium 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 Sodium (click to see decay chain): 18Na  19Na  20Na  21Na  22Na  23Na  24Na  25Na  26Na  27Na  28Na  29Na  30Na  31Na  32Na  33Na  34Na  35Na  36Na  37Na

21Na     Half-life Boson, 11p 10n 22.49 s Spin 3/2 Parity 1 Show Decay Modes Hide Ultimate Decay Products Yield Nuclide 100% 21Ne Atomic Weight 20.997655206 Abundance None Mass Excess -2.184161MeV Binding Energy 7.765524MeV Magnetic Moment 2.3863 μ Quadrupole Moment 0.05   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..