Actinium (Ac)vsYtterbium (Yb)
Actinium (Ac) has a higher Electron Affinity (34 vs -2 kJ/mol), while Actinium (Ac) has a higher Boiling Point (3,500 vs 1,469 K), while Actinium (Ac) has a higher Density (10 vs 7 g/cm³).
Atomic Properties
89
Atomic Number
70
227
Atomic Mass
173
7
Period
6
3
Group
3
Physical Properties
10
Density
7
1,500
Melting Point
1,097
3,500
Boiling Point
1,469
27
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
-2
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).