Rhenium (Re)vsRubidium (Rb)
Rhenium (Re) has a higher Density (21 vs 2 g/cm³), while Rhenium (Re) has a higher Melting Point (3,459 vs 312 K), while Rubidium (Rb) has a higher Electron Affinity (47 vs 6 kJ/mol).
Atomic Properties
75
Atomic Number
37
186
Atomic Mass
85
6
Period
5
7
Group
1
Physical Properties
21
Density
2
3,459
Melting Point
312
5,869
Boiling Point
961
25
Molar Heat Capacity
31
Chemical Properties
2
Electronegativity
1
6
Electron Affinity
47
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).