Berkelium (Bk)vsErbium (Er)
Erbium (Er) has a higher Electron Affinity (30 vs -165 kJ/mol), while Berkelium (Bk) has a higher Density (15 vs 9 g/cm³), while Berkelium (Bk) has a higher Atomic Mass (247 vs 167 u).
Atomic Properties
97
Atomic Number
68
247
Atomic Mass
167
7
Period
6
3
Group
3
Physical Properties
15
Density
9
1,259
Melting Point
1,802
2,900
Boiling Point
3,141
N/A
Molar Heat Capacity
28
Chemical Properties
1
Electronegativity
1
-165
Electron Affinity
30
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).