H Home Background Color: He Li Be Nobelium Main Page Black White Gray B C N O F Ne Na Mg Nobelium Pictures Page Al Si P S Cl Ar K Ca Nobelium 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 Nobelium (click to see decay chain): 248No  249No  250No  251No  252No  253No  254No  255No  256No  257No  258No  259No  260No  261No  262No  263No  264No

257No     Half-life Fermion, 102p 155n 25 s Spin 7/2 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 85% α 8.4661MeV 253Fm 15% β+ 222.1keV 257Md Show Ultimate Decay Products Atomic Weight 257.09687719 Abundance None Mass Excess 90.240522MeV Binding Energy 7.409683MeV 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..