Cobalt (Co)vsGold (Au)
Gold (Au) has a higher Electron Affinity (223 vs 64 kJ/mol), while Gold (Au) has a higher Atomic Mass (197 vs 59 u), while Gold (Au) has a higher Atomic Number (79 vs 27).
Atomic Properties
27
Atomic Number
79
59
Atomic Mass
197
4
Period
6
9
Group
11
Physical Properties
9
Density
19
1,768
Melting Point
1,337
3,200
Boiling Point
3,243
25
Molar Heat Capacity
25
Chemical Properties
2
Electronegativity
3
64
Electron Affinity
223
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).