Actinium (Ac)vsZinc (Zn)
Actinium (Ac) has a higher Electron Affinity (34 vs -58 kJ/mol), while Zinc (Zn) has a higher Group (12 vs 3), while Actinium (Ac) has a higher Atomic Mass (227 vs 65 u).
Atomic Properties
89
Atomic Number
30
227
Atomic Mass
65
7
Period
4
3
Group
12
Physical Properties
10
Density
7
1,500
Melting Point
693
3,500
Boiling Point
1,180
27
Molar Heat Capacity
25
Chemical Properties
1
Electronegativity
2
34
Electron Affinity
-58
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).