Actinium (Ac)vsHolmium (Ho)
Actinium (Ac) has a higher Atomic Mass (227 vs 165 u), while Actinium (Ac) has a higher Atomic Number (89 vs 67), while Actinium (Ac) has a higher Boiling Point (3,500 vs 2,873 K).
Atomic Properties
89
Atomic Number
67
227
Atomic Mass
165
7
Period
6
3
Group
3
Physical Properties
10
Density
9
1,500
Melting Point
1,734
3,500
Boiling Point
2,873
27
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
33
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).