electronvolt per particle
Molar energyexact by definition
One electronvolt per particle is exactly 96485.33212 J/mol, or 96.485 kJ/mol, because the conversion is the elementary charge times the Avogadro constant and both have been exact since 2019. It is the bridge between the physicist's per-atom energies and the chemist's per-mole ones: a 1 eV band gap is a 96.5 kJ/mol excitation.
Watch out: Solid-state work quotes eV per atom, per formula unit or per unit cell, and the three differ by whatever the stoichiometry is. Confirm what "per particle" means in the source before multiplying by 96.485.
| 1 | 96.485332 |
The number is the Faraday constant with different units on it, which is not a coincidence: the charge on a mole of electrons and the energy of a mole of one-volt electrons are the same product of e and N_A.
One electronvolt per particle in every molar energy unit
| 96,485.3 | joule per mole (J/mol) | |
| 96,485.3 | kilojoule per kilomole (kJ/kmol) | |
| 41,481.2 | BTU per pound-mole (BTU/lb-mol) | |
| 23,060.5 | calorie per mole (cal/mol) | |
| 96.4853 | kilojoule per mole (kJ/mol) | |
| 23.0605 | kilocalorie per mole (kcal/mol) | |
| 1 | electronvolt per particle (eV/particle)this unit | |
| 0.0964853 | megajoule per mole (MJ/mol) | |
| 0.0367493 | hartree per particle (Ha/particle) | |
| 0.000001 | megaelectronvolt per particle (MeV/particle) |