Atomic and nuclear properties of materials:
Status of ultraheavies as of March 2010 (pdf)
Atomic number 112  
Atomic mass [287.(5)] g mole-1
Density ?? g cm-3
Mean excitation energy 1156.0 eV
Minimum ionization 1.080 MeV g-1cm2
Nuclear collision length 125.1 g cm-2
Nuclear interaction length 222.5 g cm-2
Pion collision length 147.6 g cm-2
Pion interaction length 248.3 g cm-2
Radiation length 5.19 g cm-2
Critical energy 5.88 MeV (for e-)
Molière radius 18.73 g cm-2
Plasma energy 67.57 eV
Muon critical energy 110. GeV
For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PS PDF TEXT
Table of muon dE/dx and Range: PS PDF TEXT
Explanation of some entries
Note: Since there are no stable isotopes, [atomic mass] is that of the longest-lived known isotope as of Jan 2007.
Note: Density 14.0 g/cm3 and Ieff = Z*10.0 eV assumed in calculating critical energies and dE/dx.
Table of isotopes Warning: may not be current