Argon (Ar)vsMendelevium (Md)
Mendelevium (Md) has a higher Electron Affinity (94 vs -96 kJ/mol), while Mendelevium (Md) has a higher Melting Point (1,100 vs 84 K), while Mendelevium (Md) has a higher Atomic Mass (258 vs 40 u).
Atomic Properties
18
Atomic Number
101
40
Atomic Mass
258
3
Period
7
18
Group
3
Physical Properties
2
Density
N/A
84
Melting Point
1,100
87
Boiling Point
N/A
N/A
Molar Heat Capacity
N/A
Chemical Properties
N/A
Electronegativity
1
-96
Electron Affinity
94
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).