아르곤

Also known as Ar, element 18, 18Ar

원자 번호 18번의 화학 원소

OverviewAI-generated

Argon is a chemical element with the symbol Ar and atomic number 18. Its standard molar entropy is 154.8, and it has a mass of 39.95. The element’s electron configuration is listed as 1s² 2s² 2p⁶ 3s² 3p⁶, or [Ne] 3s² 3p⁶. It was discovered in 1894.

The substance has a melting point of -189.34 and a boiling point of -185.85. Its speed of sound is 813, and its dynamic viscosity is 22.7. Argon is represented by the Unicode character 氬. It has zero hydrogen bond donors and acceptors, with a charge of 0.

Synthesized by Vinony from 27 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.