Iron (Fe)vsOsmium (Os)
Osmium (Os) has a higher Electron Affinity (104 vs 15 kJ/mol), while Osmium (Os) has a higher Atomic Mass (190 vs 56 u), while Osmium (Os) has a higher Atomic Number (76 vs 26).
Atomic Properties
26
Atomic Number
76
56
Atomic Mass
190
4
Period
6
8
Group
8
Physical Properties
8
Density
23
1,811
Melting Point
3,306
3,134
Boiling Point
5,285
25
Molar Heat Capacity
25
Chemical Properties
2
Electronegativity
2
15
Electron Affinity
104
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).