| Quantity | Value | Units |
Value | Units |
| Atomic number |
17 |
|
| |
| Atomic mass |
35.453(2) |
g mole-1 |
| |
| Specific gravity
(20° C, 1 atm) |
2.980E-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 ℏωp |
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
(0° C, 1 atm, Na D) |
773.
| (n-1)x106 |
|
| |
For muons,