Actinium (Ac)vsNickel (Ni)
Actinium (Ac) has a higher Atomic Mass (227 vs 59 u), while Nickel (Ni) has a higher Group (10 vs 3), while Nickel (Ni) has a higher Electron Affinity (112 vs 34 kJ/mol).
Atomic Properties
89
Atomic Number
28
227
Atomic Mass
59
7
Period
4
3
Group
10
Physical Properties
10
Density
9
1,500
Melting Point
1,728
3,500
Boiling Point
3,003
27
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
2
34
Electron Affinity
112
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).