Gallium (Ga)vsPromethium (Pm)
Promethium (Pm) has a higher Melting Point (1,315 vs 303 K), while Gallium (Ga) has a higher Group (13 vs 3), while Gallium (Ga) has a higher Electron Affinity (41 vs 12 kJ/mol).
Atomic Properties
31
Atomic Number
61
70
Atomic Mass
145
4
Period
6
13
Group
3
Physical Properties
6
Density
7
303
Melting Point
1,315
2,673
Boiling Point
3,273
26
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
1
41
Electron Affinity
12
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).