Aluminium (Al)vsCopper (Cu)
Copper (Cu) has a higher Density (9 vs 3 g/cm³), while Copper (Cu) has a higher Electron Affinity (119 vs 42 kJ/mol), while Copper (Cu) has a higher Atomic Mass (64 vs 27 u).
Atomic Properties
13
Atomic Number
29
27
Atomic Mass
64
3
Period
4
13
Group
11
Physical Properties
3
Density
9
933
Melting Point
1,358
2,743
Boiling Point
2,835
24
Molar Heat Capacity
24
Chemical Properties
2
Electronegativity
2
42
Electron Affinity
119
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).