Actinium (Ac)vsBarium (Ba)
Actinium (Ac) has a higher Density (10 vs 4 g/cm³), while Actinium (Ac) has a higher Electron Affinity (34 vs 14 kJ/mol), while Actinium (Ac) has a higher Atomic Mass (227 vs 137 u).
Atomic Properties
89
Atomic Number
56
227
Atomic Mass
137
7
Period
6
3
Group
2
Physical Properties
10
Density
4
1,500
Melting Point
1,000
3,500
Boiling Point
2,118
27
Molar Heat Capacity
28
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
14
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).