Argon (Ar)vsRadium (Ra)
Radium (Ra) has a higher Electron Affinity (10 vs -96 kJ/mol), while Radium (Ra) has a higher Boiling Point (2,010 vs 87 K), while Radium (Ra) has a higher Melting Point (1,233 vs 84 K).
Atomic Properties
18
Atomic Number
88
40
Atomic Mass
226
3
Period
7
18
Group
2
Physical Properties
2
Density
6
84
Melting Point
1,233
87
Boiling Point
2,010
N/A
Molar Heat Capacity
N/A
Chemical Properties
N/A
Electronegativity
1
-96
Electron Affinity
10
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).