Americium (Am)vsRoentgenium (Rg)
Roentgenium (Rg) has a higher Electron Affinity (151 vs 10 kJ/mol), while Roentgenium (Rg) has a higher Group (11 vs 3), while Roentgenium (Rg) has a higher Density (29 vs 12 g/cm³).
Atomic Properties
95
Atomic Number
111
243
Atomic Mass
282
7
Period
7
3
Group
11
Physical Properties
12
Density
29
1,449
Melting Point
N/A
2,880
Boiling Point
N/A
63
Molar Heat Capacity
N/A
Chemical Properties
1
Electronegativity
N/A
10
Electron Affinity
151
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).