Argon (Ar)vsAstatine (At)
Astatine (At) has a higher Electron Affinity (233 vs -96 kJ/mol), while Astatine (At) has a higher Boiling Point (610 vs 87 K), while Astatine (At) has a higher Melting Point (575 vs 84 K).
Atomic Properties
18
Atomic Number
85
40
Atomic Mass
210
3
Period
6
18
Group
17
Physical Properties
2
Density
6
84
Melting Point
575
87
Boiling Point
610
N/A
Molar Heat Capacity
N/A
Chemical Properties
N/A
Electronegativity
2
-96
Electron Affinity
233
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).