Actinium (Ac)vsCesium (Cs)
Actinium (Ac) has a higher Density (10 vs 2 g/cm³), while Actinium (Ac) has a higher Melting Point (1,500 vs 302 K), while Actinium (Ac) has a higher Boiling Point (3,500 vs 944 K).
Atomic Properties
89
Atomic Number
55
227
Atomic Mass
133
7
Period
6
3
Group
1
Physical Properties
10
Density
2
1,500
Melting Point
302
3,500
Boiling Point
944
27
Molar Heat Capacity
32
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
46
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).