Atomic and nuclear properties of materials:
Liquid chlorine (Cl₂) (Cl)

Quantity	Value	Units	Value	Units
Atomic number	17
Atomic mass	35.453(2)	g mole-1
Density	1.57	g cm-3
Mean excitation energy	174.0	eV
Minimum ionization	1.608	MeV g-1cm2	2.531	MeV cm-1
Nuclear collision length	73.8	g cm-2	46.88	cm
Nuclear interaction length	115.7	g cm-2	73.51	cm
Pion collision length	99.5	g cm-2	63.23	cm
Pion interaction length	144.9	g cm-2	92.08	cm
Radiation length	19.28	g cm-2	12.25	cm
Critical energy	34.32	MeV (for e-)	33.35	MeV (for e+)
Molière radius	11.91	g cm-2	7.567	cm
Plasma energy	25.03	eV
Muon critical energy	506.	GeV
Melting point	171.6	K	-101.5	C
Boiling point @ 1 atm	239.1	K	-34.04	C

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