Americium (Am)vsManganese (Mn)
Americium (Am) has a higher Electron Affinity (10 vs -50 kJ/mol), while Americium (Am) has a higher Atomic Mass (243 vs 55 u), while Americium (Am) has a higher Atomic Number (95 vs 25).
Atomic Properties
95
Atomic Number
25
243
Atomic Mass
55
7
Period
4
3
Group
7
Physical Properties
12
Density
7
1,449
Melting Point
1,519
2,880
Boiling Point
2,334
63
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
2
10
Electron Affinity
-50
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).