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Chemical Properties of Neptunium and Iron


Chemical Properties of Iron and Neptunium


Chemical Properties

Chemical Formula
Np   
Fe   

Isotopes
  
  

Known Isotopes
20   
19
26   
13

Electronegativity
  
  

Pauling Electronegativity
1.36   
29
1.83   
14

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.22   
26
1.64   
8

Allen Electronegativity
Not Available   
1.80   
12

Electropositivity
  
  

Pauling Electropositivity
2.64   
25
2.17   
40

Ionization Energies
  
  

1st Energy Level
604.50 kJ/mol   
99+
762.50 kJ/mol   
17

2nd Energy Level
1,128.00 kJ/mol   
99+
1,561.90 kJ/mol   
36

3rd Energy Level
1,997.00 kJ/mol   
99+
2,957.00 kJ/mol   
29

4th Energy Level
3,242.00 kJ/mol   
99+
5,290.00 kJ/mol   
16

5th Energy Level
Not Available   
7,240.00 kJ/mol   
16

6th Energy Level
Not Available   
9,560.00 kJ/mol   
14

7th Energy level
Not Available   
12,060.00 kJ/mol   
15

8th Energy Level
Not Available   
14,580.00 kJ/mol   
14

9th Energy Level
Not Available   
22,540.00 kJ/mol   
5

10th Energy Level
Not Available   
25,290.00 kJ/mol   
8

11th Energy Level
Not Available   
28,000.00 kJ/mol   
9

12th Energy Level
Not Available   
31,920.00 kJ/mol   
9

13th Energy Level
Not Available   
34,830.00 kJ/mol   
9

14th Energy Level
Not Available   
37,840.00 kJ/mol   
11

15th Energy Level
Not Available   
44,100.00 kJ/mol   
11

16th Energy Level
Not Available   
47,206.00 kJ/mol   
13

17th Energy Level
Not Available   
122,200.00 kJ/mol   
1

18th Energy Level
Not Available   
131,000.00 kJ/mol   
2

19th Energy Level
Not Available   
140,500.00 kJ/mol   
3

20th Energy Level
Not Available   
152,600.00 kJ/mol   
5

21st Energy Level
Not Available   
163,000.00 kJ/mol   
5

22nd Energy Level
Not Available   
173,600.00 kJ/mol   
4

23rd Energy Level
Not Available   
188,100.00 kJ/mol   
4

24th Energy Level
Not Available   
195,200.00 kJ/mol   
1

Electrochemical Equivalent
1.77 g/amp-hr   
39
0.69 g/amp-hr   
99+

Electron Work Function
Not Available   
4.70 eV   
10

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Corrosion, Ionization, Solubility   

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