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Isotopes of Protactinium (click to see decay chain):
212Pa  213Pa  214Pa  215Pa  216Pa  217Pa  218Pa  219Pa  220Pa  221Pa  222Pa  223Pa  224Pa  225Pa  226Pa  227Pa  228Pa  229Pa  230Pa  231Pa  232Pa  233Pa  234Pa  235Pa  236Pa  237Pa  238Pa  239Pa  240Pa 

221Pa    Half-lifeBoson, 91p 130ntitle icon
5.9 µsSpin 9/2 Parity -1

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Atomic Weight221.021877983
Mass Excess20.379211MeV
Binding Energy7.656961MeV
Magnetic MomentN/A
Quadrupole MomentN/A
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Decay Chain Image

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..