Astatine (At)vsRoentgenium (Rg)
Roentgenium (Rg) has a higher Density (29 vs 6 g/cm³), while Astatine (At) has a higher Group (17 vs 11), while Astatine (At) has a higher Electron Affinity (233 vs 151 kJ/mol).
Atomic Properties
85
Atomic Number
111
210
Atomic Mass
282
6
Period
7
17
Group
11
Physical Properties
6
Density
29
575
Melting Point
N/A
610
Boiling Point
N/A
N/A
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
N/A
233
Electron Affinity
151
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).