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Chemical Properties of Neptunium and Manganese


Chemical Properties of Manganese and Neptunium


Chemical Properties

Chemical Formula
Np   
Mn   

Isotopes
  
  

Known Isotopes
20   
19
21   
18

Electronegativity
  
  

Pauling Electronegativity
1.36   
29
1.55   
25

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.22   
26
1.60   
9

Allen Electronegativity
Not Available   
1.75   
15

Electropositivity
  
  

Pauling Electropositivity
2.64   
25
2.45   
29

Ionization Energies
  
  

1st Energy Level
604.50 kJ/mol   
99+
717.30 kJ/mol   
30

2nd Energy Level
1,128.00 kJ/mol   
99+
1,509.00 kJ/mol   
39

3rd Energy Level
1,997.00 kJ/mol   
99+
3,248.00 kJ/mol   
21

4th Energy Level
3,242.00 kJ/mol   
99+
4,940.00 kJ/mol   
20

5th Energy Level
Not Available   
6,990.00 kJ/mol   
17

6th Energy Level
Not Available   
9,220.00 kJ/mol   
16

7th Energy level
Not Available   
11,500.00 kJ/mol   
16

8th Energy Level
Not Available   
18,770.00 kJ/mol   
5

9th Energy Level
Not Available   
21,400.00 kJ/mol   
6

10th Energy Level
Not Available   
23,960.00 kJ/mol   
9

11th Energy Level
Not Available   
27,590.00 kJ/mol   
10

12th Energy Level
Not Available   
30,330.00 kJ/mol   
10

13th Energy Level
Not Available   
33,150.00 kJ/mol   
11

14th Energy Level
Not Available   
38,880.00 kJ/mol   
10

15th Energy Level
Not Available   
41,987.00 kJ/mol   
13

16th Energy Level
Not Available   
109,480.00 kJ/mol   
1

17th Energy Level
Not Available   
118,100.00 kJ/mol   
2

18th Energy Level
Not Available   
127,100.00 kJ/mol   
3

19th Energy Level
Not Available   
138,600.00 kJ/mol   
4

20th Energy Level
Not Available   
148,500.00 kJ/mol   
6

21st Energy Level
Not Available   
158,600.00 kJ/mol   
6

22nd Energy Level
Not Available   
172,500.00 kJ/mol   
5

23rd Energy Level
Not Available   
181,380.00 kJ/mol   
5

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

Electron Work Function
Not Available   
4.10 eV   
25

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

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