Barium (Ba)vsRubidium (Rb)
Rubidium (Rb) has a higher Electron Affinity (47 vs 14 kJ/mol), while Barium (Ba) has a higher Melting Point (1,000 vs 312 K), while Barium (Ba) has a higher Density (4 vs 2 g/cm³).
Atomic Properties
56
Atomic Number
37
137
Atomic Mass
85
6
Period
5
2
Group
1
Physical Properties
4
Density
2
1,000
Melting Point
312
2,118
Boiling Point
961
28
Molar Heat Capacity
31
Chemical Properties
1
Electronegativity
1
14
Electron Affinity
47
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).