Chemical Properties of Neodymium and Protactinium
Chemical Properties
Chemical Formula
Nd
Pa
Isotopes
Known Isotopes
30
9
27
12
Electronegativity
Pauling Electronegativity
1.14
99+
1.50
27
Allred Rochow Electronegativity
1.07
32
1.14
28
Electropositivity
Pauling Electropositivity
2.86
13
2.50
27
Ionization Energies
1st Energy Level
533.10 kJ/mol
99+
568.00 kJ/mol
99+
2nd Energy Level
1,040.00 kJ/mol
99+
1,128.00 kJ/mol
99+
3rd Energy Level
2,130.00 kJ/mol
99+
1,814.00 kJ/mol
99+
4th Energy Level
3,900.00 kJ/mol
99+
2,991.00 kJ/mol
99+
Electrochemical Equivalent
1.79 g/amp-hr
37
1.72 g/amp-hr
99+
Electron Work Function
3.20 eV
34
Not Available
Other Chemical Properties
Chemical Stability, Corrosion, Flammable, Ionization
Ionization, Radioactive Isotopes, Radioactivity
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