Radium (Ra)vsScandium (Sc)
Radium (Ra) has a higher Atomic Mass (226 vs 45 u), while Radium (Ra) has a higher Atomic Number (88 vs 21), while Scandium (Sc) has a higher Electron Affinity (18 vs 10 kJ/mol).
Atomic Properties
88
Atomic Number
21
226
Atomic Mass
45
7
Period
4
2
Group
3
Physical Properties
6
Density
3
1,233
Melting Point
1,814
2,010
Boiling Point
3,109
N/A
Molar Heat Capacity
26
Chemical Properties
1
Electronegativity
1
10
Electron Affinity
18
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).