Atomic and nuclear properties of mendelevium (Md)
Atomic number 101  
Atomic mass [258.09843(3)] g mole-1
Specific gravity ?? g cm-3
Mean excitation energy 1007.0 eV
Minimum ionization 1.095 MeV g-1cm2
Nuclear collision length 121.3 g cm-2
Nuclear interaction length 214.7 g cm-2
Pion collision length 144.1 g cm-2
Pion interaction length 240.8 g cm-2
Radiation length 5.55 g cm-2
Critical energy 6.37 MeV (for e-)
Molière radius 18.49 g cm-2
Plasma energy ωp 67.45 eV
Muon critical energy 121. GeV
Melting point 300.1 K
For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries
Note: Since there is no stable isotope, [atomic mass] is that of the longest-lived isotope known as of Jun 2017.
Note: Density 14.0 g/cm3 and Ieff = 1007 eV assumed in calculating critical energies and dE/dx.
Table of isotopes via WIKIPEDIA