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Subatomic Particles Constants

Name Symbol Value

mn/mp

&nbs

1.00137841887(58)

Bohr Radius

a0

5.291772083(19) × 10-11 m

Charge to Mass Quotient, Electron

-e/me

-1.758820174(71) × 1011 C kg-1

Charge to Mass Quotient, Proton

e/mp

9.57883408(38) × 107 C kg-1

Charge, Electron Specific

-e/me

-1.758819(62) × 1011 C kg-1

Charge, Electron

e
e/h

1.602176462(63) × 10-19 C
2.417989491(95) × 1014 A J-1

Circulation, Quantum of

h/2me
h/me
<

3.636947516(27) × 10-4 m2 s-1
7.273895032(53) × 10-4 m2 s-1

Classical Electron Radius

re

2.817940285(31) × 10-15 m

Compton Wavelength of Electron

λc

2.426310215(18) × 10-12 m

Compton Wavelength, Muon

λC,µ

11.73444197(35) × 10-15 m

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