H Home Background Color: He Li Be Dubnium Main Page Black White Gray B C N O F Ne Na Mg Dubnium Pictures Page Al Si P S Cl Ar K Ca Dubnium 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 Dubnium (click to see decay chain): 255Db  256Db  257Db  258Db  259Db  260Db  261Db  262Db  263Db  264Db  265Db  266Db  267Db  268Db  269Db  270Db

257Db     Half-life Boson, 105p 152n 1.5 s Spin 9/2 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 94% α 9.23MeV 253Lr 6% SF N/A Variable 1% β+ 3.386MeV 257Rf Show Ultimate Decay Products Atomic Weight 257.107722 Abundance None Mass Excess 100.342MeV Binding Energy 7.361MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Element Pictures. Show only decay products of this isotope. Show Decay Image Smaller.

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