Argon

Argon
Ar
In situ availability:
Necessity:
Atomic number:	18
Atomic mass:	39.948
group:	18
period:	3
normal phase:	Gas
series:	Noble gases
density:	1.784 g/L
melting point:	83.80K, -189.35°C, -308.83°F
boiling point:	87.30K, -185.85°C, -302.53°F
F ← Ne → N/A
Cl ← Ar → K
Br ← Kr → N/A
Atomic radius (pm):	71
Bohr radius (pm):	71
Covalent radius (pm):	97
Van der Waals radius (pm):	188
ionic radius (pm):	-
1st ion potential (eV):	15.76
Electron Configuration
1s2 2s2 2p6 3s2 3p6
Electrons Per Shell
2, 8, 8
Electronegativity:
Electron Affinity:	Unstable anion
Oxidation states:	-
Magnetism:	Nonmagnetic
Crystal structure:	Face centered cubic

Argon is a Noble gas in group 18. It has a Face centered cubic crystalline structure. This element has 3 stable isotopes: 36, 38, and 40.

This article is an automatically generated stub. As such it may contain serious errors. You can help Lunarpedia by expanding or correcting it.