Iridium (Ir)vsRadium (Ra)
Iridium (Ir) has a higher Electron Affinity (151 vs 10 kJ/mol), while Iridium (Ir) has a higher Group (9 vs 2), while Iridium (Ir) has a higher Density (23 vs 6 g/cm³).
Atomic Properties
77
Atomic Number
88
192
Atomic Mass
226
6
Period
7
9
Group
2
Physical Properties
23
Density
6
2,719
Melting Point
1,233
4,403
Boiling Point
2,010
25
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
1
151
Electron Affinity
10
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).