Iodine (I)vsPhosphorus (P)
Iodine (I) has a higher Electron Affinity (295 vs 72 kJ/mol), while Iodine (I) has a higher Atomic Mass (127 vs 31 u), while Iodine (I) has a higher Atomic Number (53 vs 15).
Atomic Properties
53
Atomic Number
15
127
Atomic Mass
31
5
Period
3
17
Group
15
Physical Properties
5
Density
2
387
Melting Point
N/A
457
Boiling Point
N/A
N/A
Molar Heat Capacity
24
Chemical Properties
3
Electronegativity
2
295
Electron Affinity
72
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).