Atomic mass

{
  "id": "MLC-T-CHM-000897",
  "term": "Atomic mass",
  "field": "Chemistry",
  "definition": "The mass of an atom, typically expressed in unified atomic mass units (u). This value represents the total mass of protons, neutrons, and electrons in a specific isotope of an element. The atomic mass of an element listed on the periodic table is the weighted average of the masses of its naturally occurring isotopes.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "ground state",
    "unified atomic mass unit"
  ],
  "references": [
    "Green Book, 2nd ed., p. 20 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)",
    "PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 962 (https://doi.org/10.1351/pac199668040957)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/atomic-mass/"
}