Boron (B)vsNobelium (No)
Boron (B) has a higher Electron Affinity (27 vs -223 kJ/mol), while Nobelium (No) has a higher Atomic Mass (259 vs 11 u), while Nobelium (No) has a higher Atomic Number (102 vs 5).
Atomic Properties
5
Atomic Number
102
11
Atomic Mass
259
2
Period
7
13
Group
3
Physical Properties
2
Density
N/A
2,349
Melting Point
1,100
4,200
Boiling Point
N/A
11
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
1
27
Electron Affinity
-223
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).