Atomic and nuclear properties of element 115 (Un)

recognized by IUPAC on December 2015, unnamed as of March 2016.
Status of heaviest elements as of March 2016 (pdf)

Quantity	Value	Units
Atomic number	115
Atomic mass	[290.196(6)]	g mole-1
Specific gravity	??	g cm-3
Mean excitation energy	1199.0	eV
Minimum ionization	1.092	MeV g-1cm2
Nuclear collision length	125.5	g cm-2
Nuclear interaction length	223.3	g cm-2
Pion collision length	148.0	g cm-2
Pion interaction length	249.1	g cm-2
Radiation length	5.02	g cm-2
Critical energy	5.75	MeV (for e-)
Molière radius	18.53	g cm-2
Plasma energy ℏωp	68.11	eV
Muon critical energy	111.	GeV

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: One of the atomic masses reported by the JINR-LLNL group is given.
Note: Density 14.0 g/cm³ and I_eff = 1199 eV assumed in calculating critical energies and dE/dx.