| Quantity | Value | Units |
Value | Units |
| Atomic number |
8 |
|
| |
| Atomic mass |
15.999(3) |
g mole-1 |
| |
| Specific gravity
(20° C, 1 atm) |
1.332E-03 |
g cm-3 |
| |
| Mean excitation energy |
95.0 |
eV |
| |
| Minimum ionization |
1.801 |
MeV g-1cm2 |
2.398E-03 |
MeV cm-1 |
| Nuclear collision length |
61.3 |
g cm-2 |
4.606E+04
| cm |
| Nuclear interaction length |
90.2 |
g cm-2 |
6.772E+04
| cm |
| Pion collision length |
88.5 |
g cm-2 |
6.644E+04
| cm |
| Pion interaction length |
121.9 |
g cm-2 |
9.156E+04
| cm |
| Radiation length |
34.24
| g cm-2 |
2.571E+04
| cm |
| Critical energy |
81.45 |
MeV (for e-) |
79.62
| MeV (for e+) |
| Molière radius |
8.91 |
g cm-2 |
6695.
| cm |
| Plasma energy ℏωp |
0.74 |
eV |
| |
| Muon critical energy |
1050. |
GeV |
| |
| Melting point |
54.36 |
K |
-218.8
| C |
| Boiling point @ 1 atm |
90.20
| K |
-182.9
| C |
| Index of refraction
(0° C, 1 atm, Na D) |
271.
| (n-1)x106 |
|
| |
For muons,