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Chemical Properties of Copper and Tantalum

Copper
Tantalum
Chemical Properties of Tantalum and Copper


Chemical Properties
Chemical Formula
Cu   
Ta   
Isotopes
  
  
Known Isotopes
29   
10
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.90   
11
1.50   
27
Sanderson Electronegativity
1.98   
9
Not Available   
Allred Rochow Electronegativity
1.75   
3
1.33   
22
Mulliken-Jaffe Electronegativity
1.49   
14
Not Available   
Allen Electronegativity
1.85   
9
1.34   
33
Electropositivity
  
  
Pauling Electropositivity
2.10   
99+
2.50   
27
Ionization Energies
  
  
1st Energy Level
745.50 kJ/mol   
22
761.00 kJ/mol   
18
2nd Energy Level
1,957.90 kJ/mol   
15
1,500.00 kJ/mol   
40
3rd Energy Level
3,555.00 kJ/mol   
15
Not Available   
4th Energy Level
5,536.00 kJ/mol   
12
Not Available   
5th Energy Level
7,700.00 kJ/mol   
11
Not Available   
6th Energy Level
9,900.00 kJ/mol   
10
Not Available   
7th Energy level
13,400.00 kJ/mol   
7
Not Available   
8th Energy Level
16,000.00 kJ/mol   
9
Not Available   
9th Energy Level
19,200.00 kJ/mol   
9
Not Available   
10th Energy Level
22,400.00 kJ/mol   
11
Not Available   
11th Energy Level
25,600.00 kJ/mol   
13
Not Available   
12th Energy Level
35,600.00 kJ/mol   
6
Not Available   
13th Energy Level
38,700.00 kJ/mol   
6
Not Available   
14th Energy Level
42,000.00 kJ/mol   
7
Not Available   
15th Energy Level
46,700.00 kJ/mol   
9
Not Available   
16th Energy Level
50,200.00 kJ/mol   
10
Not Available   
17th Energy Level
53,700.00 kJ/mol   
12
Not Available   
18th Energy Level
61,100.00 kJ/mol   
10
Not Available   
19th Energy Level
64,702.00 kJ/mol   
11
Not Available   
20th Energy Level
163,700.00 kJ/mol   
2
Not Available   
21st Energy Level
174,100.00 kJ/mol   
2
Not Available   
22nd Energy Level
184,900.00 kJ/mol   
1
Not Available   
23rd Energy Level
198,800.00 kJ/mol   
1
Not Available   
Electrochemical Equivalent
1.19 g/amp-hr   
99+
1.35 g/amp-hr   
99+
Electron Work Function
4.65 eV   
11
4.25 eV   
21
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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