Astatine (At)vsThallium (Tl)
Astatine (At) has a higher Electron Affinity (233 vs 36 kJ/mol), while Thallium (Tl) has a higher Boiling Point (1,746 vs 610 K), while Thallium (Tl) has a higher Density (12 vs 6 g/cm³).
Atomic Properties
85
Atomic Number
81
210
Atomic Mass
204
6
Period
6
17
Group
13
Physical Properties
6
Density
12
575
Melting Point
577
610
Boiling Point
1,746
N/A
Molar Heat Capacity
26
Chemical Properties
2
Electronegativity
2
233
Electron Affinity
36
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).