Oxygen (O)vsProtactinium (Pa)
Protactinium (Pa) has a higher Boiling Point (4,300 vs 90 K), while Protactinium (Pa) has a higher Melting Point (1,841 vs 54 K), while Protactinium (Pa) has a higher Atomic Mass (231 vs 16 u).
Atomic Properties
8
Atomic Number
91
16
Atomic Mass
231
2
Period
7
16
Group
3
Physical Properties
1
Density
15
54
Melting Point
1,841
90
Boiling Point
4,300
N/A
Molar Heat Capacity
N/A
Chemical Properties
3
Electronegativity
2
141
Electron Affinity
53
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).