Atomic number
Term · Chemistry · MLC-T-CHM-000900
The quantity of protons present within the nucleus of an atom of a particular chemical element. This number, symbolized by Z, uniquely identifies an element and determines its position in the periodic table. Since a neutral atom has an equal number of electrons and protons, the atomic number also dictates the atom's electron configuration and its chemical properties.
| Identifier | MLC-T-CHM-000900 |
|---|---|
| Field | Chemistry |
| Subject | Physical and Biophysical Chemistry |
| Synonyms | proton number |
| 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); Red Book, 3rd ed., p. 35 |
| See also | Nucleus |
Record as JSON
{
"id": "MLC-T-CHM-000900",
"term": "Atomic number",
"field": "Chemistry",
"definition": "The quantity of protons present within the nucleus of an atom of a particular chemical element. This number, symbolized by Z, uniquely identifies an element and determines its position in the periodic table. Since a neutral atom has an equal number of electrons and protons, the atomic number also dictates the atom's electron configuration and its chemical properties.",
"synonyms": [
"proton number"
],
"subject": "Physical and Biophysical Chemistry",
"see_also": [
"nucleus"
],
"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)",
"Red Book, 3rd ed., p. 35"
],
"url": "https://mlchart.com/terminology/chemistry/atomic-number/"
}
Record 968 of 13,678 in Chemistry terminology (MLC-0109). Request the full dataset.