Lawrencium (Lr)vsNeptunium (Np)
Neptunium (Np) has a higher Electron Affinity (46 vs -30 kJ/mol), while Lawrencium (Lr) has a higher Melting Point (1,900 vs 912 K), while Lawrencium (Lr) has a higher Atomic Mass (266 vs 237 u).
Atomic Properties
103
Atomic Number
93
266
Atomic Mass
237
7
Period
7
3
Group
3
Physical Properties
N/A
Density
20
1,900
Melting Point
912
N/A
Boiling Point
4,447
N/A
Molar Heat Capacity
29
Chemical Properties
1
Electronegativity
1
-30
Electron Affinity
46
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).