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Chemical Properties of Beryllium and Cobalt

Beryllium
Cobalt
Chemical Properties of Cobalt and Beryllium


Chemical Properties
Chemical Formula
Be   
Co   
Isotopes
  
  
Known Isotopes
9   
29
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.57   
24
1.88   
12
Sanderson Electronegativity
1.81   
12
2.56   
1
Allred Rochow Electronegativity
1.47   
14
1.70   
5
Mulliken-Jaffe Electronegativity
1.54   
12
Not Available   
Allen Electronegativity
1.58   
23
1.84   
10
Electropositivity
  
  
Pauling Electropositivity
2.43   
30
2.12   
99+
Ionization Energies
  
  
1st Energy Level
899.50 kJ/mol   
7
760.40 kJ/mol   
19
2nd Energy Level
1,757.10 kJ/mol   
23
1,648.00 kJ/mol   
31
3rd Energy Level
14,848.70 kJ/mol   
2
3,232.00 kJ/mol   
22
4th Energy Level
21,006.60 kJ/mol   
2
4,950.00 kJ/mol   
19
5th Energy Level
Not Available   
7,670.00 kJ/mol   
12
6th Energy Level
Not Available   
9,840.00 kJ/mol   
12
7th Energy level
Not Available   
12,440.00 kJ/mol   
11
8th Energy Level
Not Available   
15,230.00 kJ/mol   
12
9th Energy Level
Not Available   
17,959.00 kJ/mol   
13
10th Energy Level
Not Available   
26,570.00 kJ/mol   
7
11th Energy Level
Not Available   
29,400.00 kJ/mol   
8
12th Energy Level
Not Available   
32,400.00 kJ/mol   
8
13th Energy Level
Not Available   
36,600.00 kJ/mol   
8
14th Energy Level
Not Available   
39,700.00 kJ/mol   
9
15th Energy Level
Not Available   
42,800.00 kJ/mol   
12
16th Energy Level
Not Available   
49,396.00 kJ/mol   
11
17th Energy Level
Not Available   
52,737.00 kJ/mol   
13
18th Energy Level
Not Available   
134,810.00 kJ/mol   
1
19th Energy Level
Not Available   
145,170.00 kJ/mol   
2
20th Energy Level
Not Available   
154,700.00 kJ/mol   
4
21st Energy Level
Not Available   
167,400.00 kJ/mol   
4
22nd Energy Level
Not Available   
178,100.00 kJ/mol   
3
23rd Energy Level
Not Available   
189,300.00 kJ/mol   
3
Electrochemical Equivalent
0.17 g/amp-hr   
99+
1.10 g/amp-hr   
99+
Electron Work Function
4.98 eV   
6
5.00 eV   
5
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes   
Chemical Stability, Ionization   
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