Actinium (Ac)vsCarbon (C)
Actinium (Ac) has a higher Atomic Mass (227 vs 12 u), while Actinium (Ac) has a higher Atomic Number (89 vs 6), while Actinium (Ac) has a higher Density (10 vs 2 g/cm³).
Atomic Properties
89
Atomic Number
6
227
Atomic Mass
12
7
Period
2
3
Group
14
Physical Properties
10
Density
2
1,500
Melting Point
N/A
3,500
Boiling Point
N/A
27
Molar Heat Capacity
9
Chemical Properties
1
Electronegativity
3
34
Electron Affinity
122
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).