Skip to content
آرگون

File:Argon_discharge_tube.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ696· pop 167· linked from 1,178 articles

آرگون

Sign in to save

Also known as Ar, element 18, 18Ar

عنصر شیمیایی با نماد Ar و عدد اتمی ۱۸

AI overview

Argon is a chemical element and noble gas that makes up about 0.934% of Earth's atmosphere, making it the third most abundant gas in the air we breathe. It is notably more plentiful than other gases like carbon dioxide and water vapor, and is the most abundant noble gas found in Earth's crust.

AI-generated from the Wikipedia summary — may contain errors.

Chemical data

Formula
Ar
Molecular weight
39.9 g/mol
IUPAC name
argon
SMILES
[Ar]
InChIKey
XKRFYHLGVUSROY-UHFFFAOYSA-N
Polar surface area
0 Ų
H-bond donors
0
H-bond acceptors
0
Formal charge
0

via PubChem

Research

21,127 papers

via PubMed

Wikidata facts

Mass
39.95
Image
ArTube.jpg
Show 14 more facts
element symbol
Ar
Commons category
Argon
atomic number
18
speed of sound
813
Commons gallery
Argon
canonical SMILES
[Ar]
chemical formula
Ar
time of discovery or invention
1894-00-00
standard molar entropy
154.8
dynamic viscosity
22.7
Unicode character
electron configuration
[Ne] 3s² 3p⁶
melting point
-189.34
boiling point
-185.85
Sources (6)

via Wikidata · CC0

Gallery (259)

Connections

Categories