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

258Md     Half-life Fermion, 101p 157n 51.50462962963 d Spin 8 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% α 7.27128MeV 254Es 0.0015% β- 209keV 258No 0.0015% β+ 241keV 258Fm Hide Ultimate Decay Products Yield Nuclide 100.0443570418% 206Pb 1.890381746639×10-6% 205Tl 2.600109153282×10-9% 208Pb 1.691363490351×10-28% 160Dy 1.109687590157×10-32% 140Ce Unknown 172Yb Unknown 152Sm Unknown 180Hf Unknown 176Hf Unknown 156Gd Unknown 168Er Unknown 164Dy Atomic Weight 258.098431319 Abundance None Mass Excess 91.688184MeV Binding Energy 7.409669MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Isotope Symbols. 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..