Niobium (Nb)vsTantalum (Ta)
Niobium (Nb) has a higher Electron Affinity (89 vs 31 kJ/mol), while Tantalum (Ta) has a higher Atomic Mass (181 vs 93 u), while Tantalum (Ta) has a higher Density (17 vs 9 g/cm³).
Atomic Properties
41
Atomic Number
73
93
Atomic Mass
181
5
Period
6
5
Group
5
Physical Properties
9
Density
17
2,750
Melting Point
3,290
5,017
Boiling Point
5,731
25
Molar Heat Capacity
25
Chemical Properties
2
Electronegativity
2
89
Electron Affinity
31
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).