Astatine (At)vsCalcium (Ca)
Astatine (At) has a higher Electron Affinity (233 vs 2 kJ/mol), while Astatine (At) has a higher Group (17 vs 2), while Astatine (At) has a higher Atomic Mass (210 vs 40 u).
Atomic Properties
85
Atomic Number
20
210
Atomic Mass
40
6
Period
4
17
Group
2
Physical Properties
6
Density
2
575
Melting Point
1,115
610
Boiling Point
1,757
N/A
Molar Heat Capacity
26
Chemical Properties
2
Electronegativity
1
233
Electron Affinity
2
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).