Erbium (Er)vsScandium (Sc)
Erbium (Er) has a higher Atomic Mass (167 vs 45 u), while Erbium (Er) has a higher Atomic Number (68 vs 21), while Erbium (Er) has a higher Density (9 vs 3 g/cm³).
Atomic Properties
68
Atomic Number
21
167
Atomic Mass
45
6
Period
4
3
Group
3
Physical Properties
9
Density
3
1,802
Melting Point
1,814
3,141
Boiling Point
3,109
28
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
1
30
Electron Affinity
18
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).