Magnesium (Mg)vsPotassium (K)
Potassium (K) has a higher Electron Affinity (48 vs -40 kJ/mol), while Magnesium (Mg) has a higher Melting Point (923 vs 337 K), while Magnesium (Mg) has a higher Density (2 vs 1 g/cm³).
Atomic Properties
12
Atomic Number
19
24
Atomic Mass
39
3
Period
4
2
Group
1
Physical Properties
2
Density
1
923
Melting Point
337
1,363
Boiling Point
1,032
25
Molar Heat Capacity
30
Chemical Properties
1
Electronegativity
1
-40
Electron Affinity
48
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).