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Chemical Properties of Actinium and Chromium

Actinium
Chromium
Chemical Properties of Chromium and Actinium


Chemical Properties
Chemical Formula
Ac   
Cr   
Isotopes
  
  
Known Isotopes
29   
10
21   
18
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.66   
18
Sanderson Electronegativity
Not Available   
1.66   
14
Allred Rochow Electronegativity
1.00   
36
1.56   
10
Allen Electronegativity
Not Available   
1.65   
19
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.34   
36
Ionization Energies
  
  
1st Energy Level
499.00 kJ/mol   
99+
26,130.00 kJ/mol   
1
2nd Energy Level
1,170.00 kJ/mol   
99+
28,750.00 kJ/mol   
1
3rd Energy Level
1,900.00 kJ/mol   
99+
34,230.00 kJ/mol   
1
4th Energy Level
4,700.00 kJ/mol   
23
37,066.00 kJ/mol   
1
5th Energy Level
Not Available   
97,510.00 kJ/mol   
1
6th Energy Level
Not Available   
105,800.00 kJ/mol   
1
7th Energy level
Not Available   
114,300.00 kJ/mol   
1
8th Energy Level
Not Available   
125,300.00 kJ/mol   
1
9th Energy Level
Not Available   
134,700.00 kJ/mol   
1
10th Energy Level
Not Available   
144,300.00 kJ/mol   
1
11th Energy Level
Not Available   
26,130.00 kJ/mol   
12
12th Energy Level
Not Available   
28,750.00 kJ/mol   
13
13th Energy Level
Not Available   
34,230.00 kJ/mol   
10
14th Energy Level
Not Available   
37,066.00 kJ/mol   
12
15th Energy Level
Not Available   
97,510.00 kJ/mol   
1
16th Energy Level
Not Available   
105,800.00 kJ/mol   
2
17th Energy Level
Not Available   
114,300.00 kJ/mol   
3
18th Energy Level
Not Available   
125,300.00 kJ/mol   
4
19th Energy Level
Not Available   
134,700.00 kJ/mol   
5
20th Energy Level
Not Available   
144,300.00 kJ/mol   
7
21st Energy Level
Not Available   
157,700.00 kJ/mol   
7
22nd Energy Level
Not Available   
166,090.00 kJ/mol   
6
Electrochemical Equivalent
2.82 g/amp-hr   
18
0.32 g/amp-hr   
99+
Electron Work Function
Not Available   
4.50 eV   
14
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility   
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