elementary charge

Also contains definition of: proton charge

Electromagnetic fundamental physical constant equal to the charge of a proton and used as atomic unit of charge e = 1.602 176 487 40 × 10 −19 C.
See also: electric charge
Source:
CODATA 2006
Green Book, 2nd ed., p. 14
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 972