Atomic and nuclear properties of materials:
Chlorine gas (Cl2) (Cl)
QuantityValueUnits ValueUnits
Atomic number 17     
Atomic mass 35.453(2) g mole-1   
Specific gravity (20° C, 1 atm) 2.98E-03 g cm-3   
Mean excitation energy 174.0 eV   
Minimum ionization 1.630 MeV g-1cm2 4.856E-03 MeV cm-1
Nuclear collision length 73.8 g cm-2 2.476E+04 cm
Nuclear interaction length 115.7 g cm-2 3.882E+04 cm
Pion collision length 99.5 g cm-2 3.340E+04 cm
Pion interaction length 144.9 g cm-2 4.864E+04 cm
Radiation length 19.28 g cm-2 6469. cm
Critical energy 40.05 MeV (for e-) 39.04 MeV (for e+)
Molière radius 10.21 g cm-2 3425. cm
Plasma energy 1.09 eV   
Muon critical energy 592. GeV   
Melting point 171.6 K -101.5 C
Boiling point @ 1 atm 239.1 K -34.04 C
Index of refraction (@ STP, Na D) 773. (n-1)x106     
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
Table of isotopes Warning: may not be current
x ray mass attenuation coefficients