Arsenic (As)vsAstatine (At)
Astatine (At) has a higher Electron Affinity (233 vs 78 kJ/mol), while Astatine (At) has a higher Atomic Mass (210 vs 75 u), while Astatine (At) has a higher Atomic Number (85 vs 33).
Atomic Properties
33
Atomic Number
85
75
Atomic Mass
210
4
Period
6
15
Group
17
Physical Properties
6
Density
6
N/A
Melting Point
575
N/A
Boiling Point
610
25
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
2
78
Electron Affinity
233
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).