H Home Background Color: He Li Be Mendelevium Main Page Black White Gray B C N O F Ne Na Mg Mendelevium Pictures Page Al Si P S Cl Ar K Ca Mendelevium 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 Mendelevium (click to see decay chain): 245Md  246Md  247Md  248Md  249Md  250Md  251Md  252Md  253Md  254Md  255Md  256Md  257Md  258Md  259Md  260Md  261Md  262Md

256Md     Half-life Fermion, 101p 155n 1.277777777778 h Spin 1 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 88% β+ 1.1071MeV 256Fm 9.2% α 7.8965MeV 252Es 3% SF N/A Variable Hide Ultimate Decay Products Yield Nuclide 8.125234365553% 208Pb 3.250073723194×10-10% 206Pb Unknown 200Hg Atomic Weight 256.094059025 Abundance None Mass Excess 87.615418MeV Binding Energy 7.420409MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Element Pictures. Also show decay chains leading to this isotope. Show all decays, even very low-probability.

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