Aluminium (Al)vsProtactinium (Pa)
Protactinium (Pa) has a higher Atomic Mass (231 vs 27 u), while Protactinium (Pa) has a higher Atomic Number (91 vs 13), while Protactinium (Pa) has a higher Density (15 vs 3 g/cm³).
Atomic Properties
13
Atomic Number
91
27
Atomic Mass
231
3
Period
7
13
Group
3
Physical Properties
3
Density
15
933
Melting Point
1,841
2,743
Boiling Point
4,300
24
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
2
42
Electron Affinity
53
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).