Argon

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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
FNeN/A
Cl ← Ar → K
BrKrN/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.




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