Aluminium (Al)vsPromethium (Pm)
Promethium (Pm) has a higher Atomic Mass (145 vs 27 u), while Promethium (Pm) has a higher Atomic Number (61 vs 13), while Aluminium (Al) has a higher Group (13 vs 3).
Atomic Properties
13
Atomic Number
61
27
Atomic Mass
145
3
Period
6
13
Group
3
Physical Properties
3
Density
7
933
Melting Point
1,315
2,743
Boiling Point
3,273
24
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
1
42
Electron Affinity
12
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).