Hafnium (Hf)vsIridium (Ir)
Iridium (Ir) has a higher Electron Affinity (151 vs 17 kJ/mol), while Iridium (Ir) has a higher Group (9 vs 4), while Iridium (Ir) has a higher Density (23 vs 13 g/cm³).
Atomic Properties
72
Atomic Number
77
178
Atomic Mass
192
6
Period
6
4
Group
9
Physical Properties
13
Density
23
2,506
Melting Point
2,719
4,876
Boiling Point
4,403
26
Molar Heat Capacity
25
Chemical Properties
1
Electronegativity
2
17
Electron Affinity
151
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).