Actinium (Ac)vsTerbium (Tb)
Terbium (Tb) has a higher Electron Affinity (112 vs 34 kJ/mol), while Actinium (Ac) has a higher Atomic Mass (227 vs 159 u), while Actinium (Ac) has a higher Atomic Number (89 vs 65).
Atomic Properties
89
Atomic Number
65
227
Atomic Mass
159
7
Period
6
3
Group
3
Physical Properties
10
Density
8
1,500
Melting Point
1,629
3,500
Boiling Point
3,396
27
Molar Heat Capacity
29
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
112
Similar Comparisons to Actinium (Ac) vs Terbium (Tb)
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).