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Chemical Properties of Calcium and Hafnium

Calcium
Hafnium
Chemical Properties of Hafnium and Calcium


Chemical Properties
Chemical Formula
Ca   
Hf   
Isotopes
  
  
Known Isotopes
19   
20
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.00   
99+
1.30   
32
Sanderson Electronegativity
0.95   
24
Not Available   
Allred Rochow Electronegativity
1.04   
34
1.23   
25
Mulliken-Jaffe Electronegativity
1.08   
17
Not Available   
Allen Electronegativity
1.03   
39
1.16   
37
Electropositivity
  
  
Pauling Electropositivity
3.00   
9
2.70   
22
Ionization Energies
  
  
1st Energy Level
589.80 kJ/mol   
99+
658.50 kJ/mol   
40
2nd Energy Level
1,145.40 kJ/mol   
99+
1,440.00 kJ/mol   
99+
3rd Energy Level
4,912.40 kJ/mol   
7
2,250.00 kJ/mol   
99+
4th Energy Level
6,491.00 kJ/mol   
7
3,216.00 kJ/mol   
99+
5th Energy Level
8,153.00 kJ/mol   
7
Not Available   
6th Energy Level
10,496.00 kJ/mol   
8
Not Available   
7th Energy level
12,270.00 kJ/mol   
12
Not Available   
8th Energy Level
14,206.00 kJ/mol   
15
Not Available   
9th Energy Level
18,191.00 kJ/mol   
12
Not Available   
10th Energy Level
20,385.00 kJ/mol   
16
Not Available   
11th Energy Level
57,110.00 kJ/mol   
3
Not Available   
12th Energy Level
63,410.00 kJ/mol   
3
Not Available   
13th Energy Level
70,110.00 kJ/mol   
3
Not Available   
14th Energy Level
78,890.00 kJ/mol   
4
Not Available   
15th Energy Level
86,310.00 kJ/mol   
5
Not Available   
16th Energy Level
94,000.00 kJ/mol   
6
Not Available   
17th Energy Level
104,900.00 kJ/mol   
7
Not Available   
18th Energy Level
111,711.00 kJ/mol   
8
Not Available   
Electrochemical Equivalent
0.75 g/amp-hr   
99+
1.66 g/amp-hr   
99+
Electron Work Function
2.87 eV   
38
3.90 eV   
27
Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic >>
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