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Chemical Properties of Potassium and Erbium

Potassium
Erbium
Chemical Properties of Erbium and Potassium


Chemical Properties
Chemical Formula
K   
Er   
Isotopes
  
  
Known Isotopes
20   
19
31   
8
Electronegativity
  
  
Pauling Electronegativity
0.82   
99+
1.24   
36
Sanderson Electronegativity
0.45   
31
Not Available   
Allred Rochow Electronegativity
0.91   
39
1.11   
29
Mulliken-Jaffe Electronegativity
0.73   
23
Not Available   
Allen Electronegativity
0.73   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.18   
3
2.76   
18
Ionization Energies
  
  
1st Energy Level
418.80 kJ/mol   
99+
589.30 kJ/mol   
99+
2nd Energy Level
3,052.00 kJ/mol   
5
1,150.00 kJ/mol   
99+
3rd Energy Level
4,420.00 kJ/mol   
8
2,194.00 kJ/mol   
99+
4th Energy Level
5,877.00 kJ/mol   
9
4,120.00 kJ/mol   
33
5th Energy Level
7,975.00 kJ/mol   
8
Not Available   
6th Energy Level
9,590.00 kJ/mol   
13
Not Available   
7th Energy level
11,343.00 kJ/mol   
17
Not Available   
8th Energy Level
14,944.00 kJ/mol   
13
Not Available   
9th Energy Level
16,963.70 kJ/mol   
15
Not Available   
10th Energy Level
48,610.00 kJ/mol   
3
Not Available   
11th Energy Level
54,490.00 kJ/mol   
4
Not Available   
12th Energy Level
60,730.00 kJ/mol   
4
Not Available   
13th Energy Level
68,950.00 kJ/mol   
4
Not Available   
14th Energy Level
75,900.00 kJ/mol   
5
Not Available   
15th Energy Level
83,080.00 kJ/mol   
6
Not Available   
16th Energy Level
93,400.00 kJ/mol   
7
Not Available   
17th Energy Level
99,710.00 kJ/mol   
8
Not Available   
Electrochemical Equivalent
1.46 g/amp-hr   
99+
2.08 g/amp-hr   
28
Electron Work Function
2.30 eV   
99+
Not Available   
Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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