Protactinium (Pa)vsThallium (Tl)
Thallium (Tl) has a higher Group (13 vs 3), while Protactinium (Pa) has a higher Melting Point (1,841 vs 577 K), while Protactinium (Pa) has a higher Boiling Point (4,300 vs 1,746 K).
Atomic Properties
91
Atomic Number
81
231
Atomic Mass
204
7
Period
6
3
Group
13
Physical Properties
15
Density
12
1,841
Melting Point
577
4,300
Boiling Point
1,746
N/A
Molar Heat Capacity
26
Chemical Properties
2
Electronegativity
2
53
Electron Affinity
36
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).