Copper (Cu)vsRhenium (Re)
Copper (Cu) has a higher Electron Affinity (119 vs 6 kJ/mol), while Rhenium (Re) has a higher Atomic Mass (186 vs 64 u), while Rhenium (Re) has a higher Atomic Number (75 vs 29).
Atomic Properties
29
Atomic Number
75
64
Atomic Mass
186
4
Period
6
11
Group
7
Physical Properties
9
Density
21
1,358
Melting Point
3,459
2,835
Boiling Point
5,869
24
Molar Heat Capacity
25
Chemical Properties
2
Electronegativity
2
119
Electron Affinity
6
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).