Cobalt (Co)vsNeptunium (Np)
Neptunium (Np) has a higher Atomic Mass (237 vs 59 u), while Neptunium (Np) has a higher Atomic Number (93 vs 27), while Cobalt (Co) has a higher Group (9 vs 3).
Atomic Properties
27
Atomic Number
93
59
Atomic Mass
237
4
Period
7
9
Group
3
Physical Properties
9
Density
20
1,768
Melting Point
912
3,200
Boiling Point
4,447
25
Molar Heat Capacity
29
Chemical Properties
2
Electronegativity
1
64
Electron Affinity
46
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).