Useful constants
|
Constant
|
Symbol
|
Value
|
Unit
|
| Avagadro's constant |
NA
|
6.022045x1023
|
molecules/mol
|
| Bohr radius |
aB
|
0.052917
|
nm
|
| Boltzmann's constant |
k
|
1.380662x10-23
8.62x10-5 |
J/oK
eV/oK |
| Electron charge |
q
|
1.602189x10-19
|
C
|
| Electron rest mass |
m0
|
0.910953x10-30
|
Kg
|
| Faraday's constant |
F
|
9.648456x104
|
C/mol
|
| Gas constant |
R
|
82.0568
|
cm3atm/moloK
|
| Permeability of vacuum |
µ0
|
1.25663x10-8
|
H/cm
|
| Permittivity of vacuum |
0
|
8.854187x10-14
|
F/cm
|
| Planck's constant |
h
|
6.626176x10-34
|
J·s
|
| Reduced Planck's constant |
0
|
1.05458x10-34
|
J·s
|
| Proton rest mass |
Mp
|
1.67264x10-27
|
Kg
|
| Speed of light in a vacuum |
c
|
2.99792x1010
|
cm/s
|
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