Manganese (Mn)vsProtactinium (Pa)
Protactinium (Pa) has a higher Electron Affinity (53 vs -50 kJ/mol), while Protactinium (Pa) has a higher Atomic Mass (231 vs 55 u), while Protactinium (Pa) has a higher Atomic Number (91 vs 25).
Atomic Properties
25
Atomic Number
91
55
Atomic Mass
231
4
Period
7
7
Group
3
Physical Properties
7
Density
15
1,519
Melting Point
1,841
2,334
Boiling Point
4,300
26
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
2
-50
Electron Affinity
53
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).