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Chemical Properties of Nickel and Protactinium

Nickel
Protactinium
Chemical Properties of Protactinium and Nickel


Chemical Properties
Chemical Formula
Ni   
Pa   
Isotopes
  
  
Known Isotopes
25   
14
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.91   
10
1.50   
27
Sanderson Electronegativity
1.94   
10
Not Available   
Allred Rochow Electronegativity
1.75   
3
1.14   
28
Allen Electronegativity
1.88   
6
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.09   
99+
2.50   
27
Ionization Energies
  
  
1st Energy Level
737.10 kJ/mol   
25
568.00 kJ/mol   
99+
2nd Energy Level
1,753.00 kJ/mol   
25
1,128.00 kJ/mol   
99+
3rd Energy Level
3,395.00 kJ/mol   
17
1,814.00 kJ/mol   
99+
4th Energy Level
5,300.00 kJ/mol   
15
2,991.00 kJ/mol   
99+
5th Energy Level
7,339.00 kJ/mol   
15
Not Available   
6th Energy Level
10,400.00 kJ/mol   
9
Not Available   
7th Energy level
12,800.00 kJ/mol   
10
Not Available   
8th Energy Level
15,600.00 kJ/mol   
10
Not Available   
9th Energy Level
18,600.00 kJ/mol   
10
Not Available   
10th Energy Level
21,670.00 kJ/mol   
14
Not Available   
11th Energy Level
30,970.00 kJ/mol   
7
Not Available   
12th Energy Level
34,000.00 kJ/mol   
7
Not Available   
13th Energy Level
37,100.00 kJ/mol   
7
Not Available   
14th Energy Level
41,500.00 kJ/mol   
8
Not Available   
15th Energy Level
44,800.00 kJ/mol   
10
Not Available   
16th Energy Level
48,100.00 kJ/mol   
12
Not Available   
17th Energy Level
55,101.00 kJ/mol   
11
Not Available   
18th Energy Level
58,570.00 kJ/mol   
12
Not Available   
19th Energy Level
148,700.00 kJ/mol   
1
Not Available   
20th Energy Level
159,000.00 kJ/mol   
3
Not Available   
21st Energy Level
169,400.00 kJ/mol   
3
Not Available   
22nd Energy Level
182,700.00 kJ/mol   
2
Not Available   
23rd Energy Level
194,000.00 kJ/mol   
2
Not Available   
Electrochemical Equivalent
1.10 g/amp-hr   
99+
1.72 g/amp-hr   
99+
Electron Work Function
5.15 eV   
2
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Radioactivity   
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