Calcium (Ca)vsThulium (Tm)
Thulium (Tm) has a higher Electron Affinity (99 vs 2 kJ/mol), while Thulium (Tm) has a higher Density (9 vs 2 g/cm³), while Thulium (Tm) has a higher Atomic Mass (169 vs 40 u).
Atomic Properties
20
Atomic Number
69
40
Atomic Mass
169
4
Period
6
2
Group
3
Physical Properties
2
Density
9
1,115
Melting Point
1,818
1,757
Boiling Point
2,223
26
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
2
Electron Affinity
99
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).