Iridium (Ir)vsLanthanum (La)
Iridium (Ir) has a higher Density (23 vs 6 g/cm³), while Iridium (Ir) has a higher Group (9 vs 3), while Iridium (Ir) has a higher Electron Affinity (151 vs 53 kJ/mol).
Atomic Properties
77
Atomic Number
57
192
Atomic Mass
139
6
Period
6
9
Group
3
Physical Properties
23
Density
6
2,719
Melting Point
1,193
4,403
Boiling Point
3,737
25
Molar Heat Capacity
27
Chemical Properties
2
Electronegativity
1
151
Electron Affinity
53
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).