| Constant |
Value |
| Atomic Mass Unit |
1.660540 x 10-27 kg |
| Avogadro constant |
6.022137 x 1023 mol-1 |
| Bohr magneton |
9.274015 x 10-24 JT-1 |
| Bohr radius |
5.291771 x 10-11 m |
| Boltzmann constant |
1.380662 x 10-23 JK-1 |
| Compton wavelength (e) |
2.426311 x 10-12 m |
| Compton wavelength (n) |
1.319591 x 10-15 m |
| Compton wavelength (p) |
1.321410 x 10-15 m |
| Electric field constant in vacuo |
8.854188 x 10-12 Fm-1 |
| Electron radius |
2.817941 x 10-15 m |
| Elementary charge |
1.602177 x 10-19 C |
| Faraday constant |
9.648531 x 104 Cmol-1 |
| Fine structure constant |
7.297353 x 10-3 |
| Gas constant |
8.31451 J mol-1K-1 |
| Gravitation constant |
6.672590 x 10-11 Nm2kg-2 |
| Intrinsic impedance |
3.767301 x 102 Ω |
| Light velocity in vacuo |
2.997924 x 108 ms-1 |
| Loschmidt constant |
2.686763 x 1025 m-3 |
| Magnetic field constant in vacuo |
1.256637 x 10-7 Hm-1 |
| Molar volume of ideal gases 298 K, 101.325 kPa |
2.445294 x 10-2 m3mol-1 |
| Molar volume of ideal gases 298 K, 101.325 kPa |
2.445294 x 10-2 m3mol-1 |
| Normal acceleration of fall |
9.80665 ms-2 |
| Planck constant |
6.626075 x 10-34 Js |
| Rest mass of the electron |
9.109390 x 10-31 kg |
| Rest mass of the neutron |
1.674929 x 10-27 kg |
| Rest mass of the proton |
1.672623 x 10-27 kg |
| Rotational quantum |
1.054588 x 10-34 Js |
| Rydberg constant |
1.097373 x 107 m- |
| Speed of light |
2.998 x 108 m/s |
| Pi |
3.14159 |
| e |
2.718 |
| ln x |
2.3026 log x |
| 2.3026 R |
19.14 J/(mol.K) |
| 2.3026 RT (at 25°C) |
5.708 kJ/mol |