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Atomic Constants

- table or chart of atomic constants including symbol, value and units for values such as Rydberg constant, Bohr radius, Hartree energy, etc.

Physical & fundamental constants pages include:

    •  Fundamental physical constants
    •  Universal constants
    •  Electromagnetic constants
    •  Atomic constants
    •  Electron constants
    •  Proton constants
    •  Neutron constants
    •  Physico-chemical constants

Atomic constants are used in many areas of science and electronics for a variety of calculations.

The atomic constants that come under the universal constants heading include items such as the Rydberg constant, Bohr radius, Hartree energy, etc.

Details for these atomic constants and more are given below. The constant name, symbol, value, units and the relative uncertainty are provided.


Constant name Symbol of constant Value Units Relative Uncertainty
Rydberg constant
R
10.973 731 534
m^-1
0.0012
Rydberg constant in hertz
 
3.289 841 9499
10^15 Hz
0.0012
Rydberg constant in Joules
 
2.179 8741
10^-18 J
0.60
Rydberg constant in eV
 
13.605 6981
eV
0.30
Bohr radius
a0
0.529 177 249
10^-10 m
0.045
Hartree energy
Eh
4.359 748 2
10^-18 J
0.60
Hartree energy in eV
 
27.211 396 1
eV
0.30
Fine structure constant
α
7.297 353 08
10^-3
0.045
Inverse fine structure constant
α^-1
137.035 989 5
 
0.045

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