Fermium (Fm)vsThallium (Tl)
Thallium (Tl) has a higher Group (13 vs 3), while Fermium (Fm) has a higher Melting Point (1,800 vs 577 K), while Fermium (Fm) has a higher Atomic Mass (257 vs 204 u).
Atomic Properties
100
Atomic Number
81
257
Atomic Mass
204
7
Period
6
3
Group
13
Physical Properties
N/A
Density
12
1,800
Melting Point
577
N/A
Boiling Point
1,746
N/A
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
2
34
Electron Affinity
36
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).