Einsteinium (Es)vsYttrium (Y)
Yttrium (Y) has a higher Electron Affinity (30 vs -29 kJ/mol), while Einsteinium (Es) has a higher Atomic Mass (252 vs 89 u), while Einsteinium (Es) has a higher Atomic Number (99 vs 39).
Atomic Properties
99
Atomic Number
39
252
Atomic Mass
89
7
Period
5
3
Group
3
Physical Properties
9
Density
4
1,133
Melting Point
1,799
1,269
Boiling Point
3,203
N/A
Molar Heat Capacity
27
Chemical Properties
1
Electronegativity
1
-29
Electron Affinity
30
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).