Actinium (Ac)vsRadium (Ra)
Actinium (Ac) has a higher Electron Affinity (34 vs 10 kJ/mol), while Actinium (Ac) has a higher Density (10 vs 6 g/cm³), while Actinium (Ac) has a higher Boiling Point (3,500 vs 2,010 K).
Atomic Properties
89
Atomic Number
88
227
Atomic Mass
226
7
Period
7
3
Group
2
Physical Properties
10
Density
6
1,500
Melting Point
1,233
3,500
Boiling Point
2,010
27
Molar Heat Capacity
N/A
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
10
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).