Fermium (Fm)vsYttrium (Y)
Fermium (Fm) has a higher Atomic Mass (257 vs 89 u), while Fermium (Fm) has a higher Atomic Number (100 vs 39), while Fermium (Fm) has a higher Period (7 vs 5).
Atomic Properties
100
Atomic Number
39
257
Atomic Mass
89
7
Period
5
3
Group
3
Physical Properties
N/A
Density
4
1,800
Melting Point
1,799
N/A
Boiling Point
3,203
N/A
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
34
Electron Affinity
30
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).