Actinium (Ac)vsBismuth (Bi)
Bismuth (Bi) has a higher Group (15 vs 3), while Actinium (Ac) has a higher Melting Point (1,500 vs 545 K), while Bismuth (Bi) has a higher Electron Affinity (91 vs 34 kJ/mol).
Atomic Properties
89
Atomic Number
83
227
Atomic Mass
209
7
Period
6
3
Group
15
Physical Properties
10
Density
10
1,500
Melting Point
545
3,500
Boiling Point
1,837
27
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
2
34
Electron Affinity
91
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).