Actinium (Ac)vsBerkelium (Bk)
Actinium (Ac) has a higher Electron Affinity (34 vs -165 kJ/mol), while Berkelium (Bk) has a higher Density (15 vs 10 g/cm³), while Actinium (Ac) has a higher Boiling Point (3,500 vs 2,900 K).
Atomic Properties
89
Atomic Number
97
227
Atomic Mass
247
7
Period
7
3
Group
3
Physical Properties
10
Density
15
1,500
Melting Point
1,259
3,500
Boiling Point
2,900
27
Molar Heat Capacity
N/A
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
-165
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).