Helium (He)vsRadium (Ra)
Radium (Ra) has a higher Electron Affinity (10 vs -48 kJ/mol), while Radium (Ra) has a higher Melting Point (1,233 vs 1 K), while Radium (Ra) has a higher Boiling Point (2,010 vs 4 K).
Atomic Properties
2
Atomic Number
88
4
Atomic Mass
226
1
Period
7
18
Group
2
Physical Properties
0
Density
6
1
Melting Point
1,233
4
Boiling Point
2,010
N/A
Molar Heat Capacity
N/A
Chemical Properties
N/A
Electronegativity
1
-48
Electron Affinity
10
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).