Atomic and nuclear properties of flerovium (Fl)

Element 114 recognized by IUPAC May 2009, name recognized May 2012
Status of heaviest elements as of May 2014 (pdf)

Quantity	Value	Units
Atomic number	114
Atomic mass	[289.187(5)]	g mole-1
Specific gravity	??	g cm-3
Mean excitation energy	1185.0	eV
Minimum ionization	1.080	MeV g-1cm2
Nuclear collision length	125.4	g cm-2
Nuclear interaction length	223.0	g cm-2
Pion collision length	147.9	g cm-2
Pion interaction length	248.8	g cm-2
Radiation length	5.08	g cm-2
Critical energy	5.75	MeV (for e-)
Molière radius	18.74	g cm-2
Plasma energy ℏωp	67.70	eV
Muon critical energy	112.	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 = 1185 eV assumed in calculating critical energies and dE/dx.