Elementary charge

Term · Chemistry · MLC-T-CHM-003804

The fundamental physical constant representing the magnitude of the electric charge carried by a single proton or, equivalently, the negative of the charge of a single electron. It is a defining constant of the International System of Units (SI) and is denoted by the symbol e. Since the 2019 redefinition of the SI base units, the elementary charge has an exact, defined value of 1.602176634 × 10⁻¹⁹ coulombs.

Table 1. Record
Identifier	MLC-T-CHM-003804
Field	Chemistry
Subject	Physical and Biophysical Chemistry
References	BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/); Newell et al., Metrologia 55, L13-L16 (2018) (https://doi.org/10.1088/1681-7575/aa950a)

Record as JSON

{
  "id": "MLC-T-CHM-003804",
  "term": "Elementary charge",
  "field": "Chemistry",
  "definition": "The fundamental physical constant representing the magnitude of the electric charge carried by a single proton or, equivalently, the negative of the charge of a single electron. It is a defining constant of the International System of Units (SI) and is denoted by the symbol e. Since the 2019 redefinition of the SI base units, the elementary charge has an exact, defined value of 1.602176634 × 10⁻¹⁹ coulombs.",
  "subject": "Physical and Biophysical Chemistry",
  "references": [
    "BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/)",
    "Newell et al., Metrologia 55, L13-L16 (2018) (https://doi.org/10.1088/1681-7575/aa950a)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/elementary-charge/"
}

Record 4,035 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.