Protactinium (Pa)vsYttrium (Y)
Protactinium (Pa) has a higher Density (15 vs 4 g/cm³), while Protactinium (Pa) has a higher Atomic Mass (231 vs 89 u), while Protactinium (Pa) has a higher Atomic Number (91 vs 39).
Atomic Properties
91
Atomic Number
39
231
Atomic Mass
89
7
Period
5
3
Group
3
Physical Properties
15
Density
4
1,841
Melting Point
1,799
4,300
Boiling Point
3,203
N/A
Molar Heat Capacity
27
Chemical Properties
2
Electronegativity
1
53
Electron Affinity
30
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).