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Chemical Properties of Radium and Calcium

Radium
Calcium
Chemical Properties of Calcium and Radium


Chemical Properties
Chemical Formula
Ra   
Ca   
Isotopes
  
  
Known Isotopes
33   
6
19   
20
Electronegativity
  
  
Pauling Electronegativity
0.90   
99+
1.00   
99+
Sanderson Electronegativity
Not Available   
0.95   
24
Allred Rochow Electronegativity
0.97   
38
1.04   
34
Mulliken-Jaffe Electronegativity
0.92   
20
1.08   
17
Allen Electronegativity
0.89   
99+
1.03   
39
Electropositivity
  
  
Pauling Electropositivity
3.10   
5
3.00   
9
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol   
99+
589.80 kJ/mol   
99+
2nd Energy Level
979.00 kJ/mol   
99+
1,145.40 kJ/mol   
99+
3rd Energy Level
Not Available   
4,912.40 kJ/mol   
7
4th Energy Level
Not Available   
6,491.00 kJ/mol   
7
5th Energy Level
Not Available   
8,153.00 kJ/mol   
7
6th Energy Level
Not Available   
10,496.00 kJ/mol   
8
7th Energy level
Not Available   
12,270.00 kJ/mol   
12
8th Energy Level
Not Available   
14,206.00 kJ/mol   
15
9th Energy Level
Not Available   
18,191.00 kJ/mol   
12
10th Energy Level
Not Available   
20,385.00 kJ/mol   
16
11th Energy Level
Not Available   
57,110.00 kJ/mol   
3
12th Energy Level
Not Available   
63,410.00 kJ/mol   
3
13th Energy Level
Not Available   
70,110.00 kJ/mol   
3
14th Energy Level
Not Available   
78,890.00 kJ/mol   
4
15th Energy Level
Not Available   
86,310.00 kJ/mol   
5
16th Energy Level
Not Available   
94,000.00 kJ/mol   
6
17th Energy Level
Not Available   
104,900.00 kJ/mol   
7
18th Energy Level
Not Available   
111,711.00 kJ/mol   
8
Electrochemical Equivalent
4.22 g/amp-hr   
6
0.75 g/amp-hr   
99+
Electron Work Function
Not Available   
2.87 eV   
38
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Chemical Stability, Flammability, Ionization, Solubility   
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