Actinium (Ac)vsIodine (I)
Iodine (I) has a higher Electron Affinity (295 vs 34 kJ/mol), while Actinium (Ac) has a higher Boiling Point (3,500 vs 457 K), while Iodine (I) has a higher Group (17 vs 3).
Atomic Properties
89
Atomic Number
53
227
Atomic Mass
127
7
Period
5
3
Group
17
Physical Properties
10
Density
5
1,500
Melting Point
387
3,500
Boiling Point
457
27
Molar Heat Capacity
N/A
Chemical Properties
1
Electronegativity
3
34
Electron Affinity
295
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).