Astatine (At)vsHafnium (Hf)
Astatine (At) has a higher Electron Affinity (233 vs 17 kJ/mol), while Hafnium (Hf) has a higher Boiling Point (4,876 vs 610 K), while Hafnium (Hf) has a higher Melting Point (2,506 vs 575 K).
Atomic Properties
85
Atomic Number
72
210
Atomic Mass
178
6
Period
6
17
Group
4
Physical Properties
6
Density
13
575
Melting Point
2,506
610
Boiling Point
4,876
N/A
Molar Heat Capacity
26
Chemical Properties
2
Electronegativity
1
233
Electron Affinity
17
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).