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Chemical Properties of Beryllium and Potassium

Beryllium
Potassium
Chemical Properties of Potassium and Beryllium


Chemical Properties
Chemical Formula
Be   
K   
Isotopes
  
  
Known Isotopes
9   
29
20   
19
Electronegativity
  
  
Pauling Electronegativity
1.57   
24
0.82   
99+
Sanderson Electronegativity
1.81   
12
0.45   
31
Allred Rochow Electronegativity
1.47   
14
0.91   
39
Mulliken-Jaffe Electronegativity
1.54   
12
0.73   
23
Allen Electronegativity
1.58   
23
0.73   
99+
Electropositivity
  
  
Pauling Electropositivity
2.43   
30
3.18   
3
Ionization Energies
  
  
1st Energy Level
899.50 kJ/mol   
7
418.80 kJ/mol   
99+
2nd Energy Level
1,757.10 kJ/mol   
23
3,052.00 kJ/mol   
5
3rd Energy Level
14,848.70 kJ/mol   
2
4,420.00 kJ/mol   
8
4th Energy Level
21,006.60 kJ/mol   
2
5,877.00 kJ/mol   
9
5th Energy Level
Not Available   
7,975.00 kJ/mol   
8
6th Energy Level
Not Available   
9,590.00 kJ/mol   
13
7th Energy level
Not Available   
11,343.00 kJ/mol   
17
8th Energy Level
Not Available   
14,944.00 kJ/mol   
13
9th Energy Level
Not Available   
16,963.70 kJ/mol   
15
10th Energy Level
Not Available   
48,610.00 kJ/mol   
3
11th Energy Level
Not Available   
54,490.00 kJ/mol   
4
12th Energy Level
Not Available   
60,730.00 kJ/mol   
4
13th Energy Level
Not Available   
68,950.00 kJ/mol   
4
14th Energy Level
Not Available   
75,900.00 kJ/mol   
5
15th Energy Level
Not Available   
83,080.00 kJ/mol   
6
16th Energy Level
Not Available   
93,400.00 kJ/mol   
7
17th Energy Level
Not Available   
99,710.00 kJ/mol   
8
Electrochemical Equivalent
0.17 g/amp-hr   
99+
1.46 g/amp-hr   
99+
Electron Work Function
4.98 eV   
6
2.30 eV   
99+
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes   
Chemical Stability, Flammability, Ionization, Solubility   
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