Iodine (I)vsOxygen (O)
Iodine (I) has a higher Atomic Mass (127 vs 16 u), while Iodine (I) has a higher Melting Point (387 vs 54 K), while Iodine (I) has a higher Atomic Number (53 vs 8).
Atomic Properties
53
Atomic Number
8
127
Atomic Mass
16
5
Period
2
17
Group
16
Physical Properties
5
Density
1
387
Melting Point
54
457
Boiling Point
90
N/A
Molar Heat Capacity
N/A
Chemical Properties
3
Electronegativity
3
295
Electron Affinity
141
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).