Latin name:
Argon
English name:
Argon
Year discovered:
1894
CAS Number:
CAS7440-37-1
Discovered by:
Sir William Ramsay
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Electron shell:
K2 L8 M8 N0 O0 P0 Q0 R0
Electrons:18
Protons:18
Neutrons:22
Atomic number:
18
Atomic weight (Relative atomic mass):
39.948(g/mol)
Density:
0.001784 (g/cm³) (g/cm³)
Melting point:
-189.34°C = -308.81°F = 83.81K
Boiling point:
-185.85°C = -302.53°F = 87.3K
Phase:
Gas
Valence:
0
Period:
3
Block:
p - block
Electron configuration:
[Ne]3s2 3p6
1s2 2s2 2p6 3s2 3p6
Oxidation states:
Ion charge:
----
The ionisation potential of an atom:
15.68 (eV)
Atomic radius:
71 (pm)
Covalent radius:
97 (pm)
Van der Waals radius:
188 (pm)
Electronegativity:
----
Valence:
0
Electron affinity:
0 (kJ/mole)
Electrical conductivity:
----
Electrical type:
----
Magnetic type:
Diamagnetism
Volume magnetic susceptibility:
-0.0000000107
Mass magnetic susceptibility:
-0.000000006
Molar magnetic susceptibility:
-2.4 ⋅ 10-10 (m³/mol)
Resistivity:
----
Superconducting point:
----
Crystal structure:
Face-centered cubic
Grid parameters:
5.260 Å
Attitude c/a :
----
Debye temperature:
-188.15°C = -306.67°F = 85.0K
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