Americium (Am)vsMagnesium (Mg)
Americium (Am) has a higher Electron Affinity (10 vs -40 kJ/mol), while Americium (Am) has a higher Atomic Mass (243 vs 24 u), while Americium (Am) has a higher Atomic Number (95 vs 12).
Atomic Properties
95
Atomic Number
12
243
Atomic Mass
24
7
Period
3
3
Group
2
Physical Properties
12
Density
2
1,449
Melting Point
923
2,880
Boiling Point
1,363
63
Molar Heat Capacity
25
Chemical Properties
1
Electronegativity
1
10
Electron Affinity
-40
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).