Actinium (Ac)vsRhodium (Rh)
Rhodium (Rh) has a higher Electron Affinity (110 vs 34 kJ/mol), while Rhodium (Rh) has a higher Group (9 vs 3), while Actinium (Ac) has a higher Atomic Mass (227 vs 103 u).
Atomic Properties
89
Atomic Number
45
227
Atomic Mass
103
7
Period
5
3
Group
9
Physical Properties
10
Density
12
1,500
Melting Point
2,237
3,500
Boiling Point
3,968
27
Molar Heat Capacity
25
Chemical Properties
1
Electronegativity
2
34
Electron Affinity
110
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).