Boron (B)vsPromethium (Pm)
Promethium (Pm) has a higher Atomic Mass (145 vs 11 u), while Promethium (Pm) has a higher Atomic Number (61 vs 5), while Boron (B) has a higher Group (13 vs 3).
Atomic Properties
5
Atomic Number
61
11
Atomic Mass
145
2
Period
6
13
Group
3
Physical Properties
2
Density
7
2,349
Melting Point
1,315
4,200
Boiling Point
3,273
11
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
1
27
Electron Affinity
12
Similar Comparisons to Boron (B) vs Promethium (Pm)
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).