Argon (Ar)vsOganesson (Og)
Oganesson (Og) has a higher Electron Affinity (5 vs -96 kJ/mol), while Oganesson (Og) has a higher Atomic Mass (294 vs 40 u), while Oganesson (Og) has a higher Atomic Number (118 vs 18).
Atomic Properties
18
Atomic Number
118
40
Atomic Mass
294
3
Period
7
18
Group
18
Physical Properties
2
Density
5
84
Melting Point
N/A
87
Boiling Point
350
N/A
Molar Heat Capacity
N/A
Chemical Properties
N/A
Electronegativity
N/A
-96
Electron Affinity
5
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).