Element Name: Argon
Atomic No.: 18
State (298 K): gas
Uses: lighting
Atomic Mass: 39.948 g/mol
Density: 1.78 g/L
B.P.: 83.8 K
F.P.: 87.3 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
Isotopes:
36
Ar 35.968 amu (0.337%)
38
Ar 37.963 amu (0.063%)
40
Ar 39.962 amu (99.60%)
Electronegativity: ?
Radius: 174 pm (atomic)
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