Americium (Am)vsThulium (Tm)
Thulium (Tm) has a higher Electron Affinity (99 vs 10 kJ/mol), while Americium (Am) has a higher Molar Heat Capacity (63 vs 27 J/(mol·K)), while Americium (Am) has a higher Atomic Mass (243 vs 169 u).
Atomic Properties
95
Atomic Number
69
243
Atomic Mass
169
7
Period
6
3
Group
3
Physical Properties
12
Density
9
1,449
Melting Point
1,818
2,880
Boiling Point
2,223
63
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
10
Electron Affinity
99
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).