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NIST Atomic Spectra Database
Ionization Energies Data

Pr (all spectra)
59 Data Rows Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, May 4]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

--------------------------------------------------------------------------------------------------------------------------------------------------------
At. num | El. Name     | Isoel. Seq. | Ground Shells (a) | Ground Level     |        Ionization Energy (eV)        |   Uncertainty (eV)   | References
--------|--------------|-------------|-------------------|------------------|--------------------------------------|----------------------|-------------
     59 | Praseodymium | Pr          | [Xe].4f3.6s2      | 4I*<9/2>         |               [5.4702]               |             0.0004   |      L19006
     59 | Praseodymium | Ce          | [Xe].4f3.6s       | (9/2,1/2)*<4>    |              [10.631]                |             0.020    |  L19870c180
     59 | Praseodymium | La          | [Xe].4f3          | 4I*<9/2>         |               21.6237                |             0.0025   | L3974,L3420
     59 | Praseodymium | Ba          | [Xe].4f2          | 3H<4>            |              [38.981]                |             0.025    | L3974,L3420
     59 | Praseodymium | Cs          | [Xe].4f           | 2F*<5/2>         |              [57.53]                 |             0.05     | L3974,L4095
     59 | Praseodymium | Xe          | [Cd].5p6          | 1S0              |              (82)                    |             4        |        L582
     59 | Praseodymium | I           | [Cd].4f.5p4       | *                |              (97)                    |             5        |        L582
     59 | Praseodymium | Te          | [Cd].4f.5p3       |                  |             (112)                    |             6        |        L582
     59 | Praseodymium | Sb          | [Cd].4f.5p2       | *                |             (131)                    |             7        |        L582
     59 | Praseodymium | Sn          | [Cd].4f2          |                  |             (148)                    |             7        |        L582
     59 | Praseodymium | In          | [Cd].5p           | 2P*<1/2>         |             (162.0)                  |             2.4      |    L8672c99
     59 | Praseodymium | Cd          | [Kr].4d10.5s2     | 1S0              |             (196.0)                  |             2.5      |    L8672c99
     59 | Praseodymium | Ag          | [Kr].4d10.5s      | 2S<1/2>          |             [217.02]                 |             0.12     |       L5532
     59 | Praseodymium | Pd          | [Kr].4d10         | 1S0              |             (350)                    |             3        |    L8672c99
     59 | Praseodymium | Rh          | [Kr].4d9          | 2D<5/2>          |             (378)                    |             3        |    L8672c99
     59 | Praseodymium | Ru          | [Kr].4d8          | 3F<4>            |             (412)                    |             3        |    L8672c99
     59 | Praseodymium | Tc          | [Kr].4d7          | 4F<9/2>          |             (445)                    |             3        |    L8672c99
     59 | Praseodymium | Mo          | [Kr].4d6          | 5D<4>            |             (478)                    |             3        |    L8672c99
     59 | Praseodymium | Nb          | [Kr].4d5          | 6S<5/2>          |             (516)                    |             3        |    L8672c99
     59 | Praseodymium | Zr          | [Kr].4d4          | 5D0              |             (554)                    |             4        |    L8672c99
     59 | Praseodymium | Y           | [Kr].4d3          | 4F<3/2>          |             (590)                    |             4        |    L8672c99
     59 | Praseodymium | Sr          | [Kr].4d2          | 3F<2>            |             (627)                    |             4        |    L8672c99
     59 | Praseodymium | Rb          | [Kr].4d           | 2D<3/2>          |             (663)                    |             4        |    L8672c99
     59 | Praseodymium | Kr          | [Ar].3d10.4s2.4p6 | 1S0              |             (803)                    |             4        |    L8672c99
     59 | Praseodymium | Br          | [Ar].3d10.4s2.4p5 | 2P*<3/2>         |             (840)                    |             4        |    L8672c99
     59 | Praseodymium | Se          | [Ar].3d10.4s2.4p4 | 3P<2>            |             (880)                    |             4        |    L8672c99
     59 | Praseodymium | As          | [Ar].3d10.4s2.4p3 | 4S*<3/2>         |             (920)                    |             4        |    L8672c99
     59 | Praseodymium | Ge          | [Ar].3d10.4s2.4p2 | 3P0              |             (985)                    |             4        |    L8672c99
     59 | Praseodymium | Ga          | [Ar].3d10.4s2.4p  | 2P*<1/2>         |            (1028)                    |             4        |    L8672c99
     59 | Praseodymium | Zn          | [Ar].3d10.4s2     | 1S0              |            (1124)                    |             4        |    L8672c99
     59 | Praseodymium | Cu          | [Ar].3d10.4s      | 2S<1/2>          |            [1169.9]                  |             0.6      |      L10278
     59 | Praseodymium | Ni          | [Ar].3d10         | 1S0              |            (2019)                    |             4        |    L8672c99
     59 | Praseodymium | Co          | [Ar].3d9          | 2D<5/2>          |            (2108)                    |             4        |    L8672c99
     59 | Praseodymium | Fe          | [Ar].3d8          | 3F<4>            |            (2202)                    |             5        |    L8672c99
     59 | Praseodymium | Mn          | [Ar].3d7          | 4F<9/2>          |            (2304)                    |             5        |    L8672c99
     59 | Praseodymium | Cr          | [Ar].3d6          | <4>              |            (2400)                    |             5        |    L8672c99
     59 | Praseodymium | V           | [Ar].3d5          | <5/2>            |            (2501)                    |             5        |    L8672c99
     59 | Praseodymium | Ti          | [Ar].3d4          | 5D0              |            (2628)                    |             4        |    L8672c99
     59 | Praseodymium | Sc          | [Ar].3d3          | 4F<3/2>          |            (2729)                    |             4        |    L8672c99
     59 | Praseodymium | Ca          | [Ar].3d2          | 3F<2>            |            (2838)                    |             4        |    L8672c99
     59 | Praseodymium | K           | [Ar].3d           | 2D<3/2>          |            (2941)                    |             4        |    L8672c99
     59 | Praseodymium | Ar          | [Ne].3s2.3p6      | 1S0              |            (3227)                    |             4        |    L8672c99
     59 | Praseodymium | Cl          | [Ne].3s2.3p5      | 2P*<3/2>         |            (3319)                    |             4        |    L8672c99
     59 | Praseodymium | S           | [Ne].3s2.3p4      | 3P<2>            |            (3419)                    |             4        |    L8672c99
     59 | Praseodymium | P           | [Ne].3s2.3p3      | 2P*<3/2>         |            (3512)                    |             4        |    L8672c99
     59 | Praseodymium | Si          | [Ne].3s2.3p2      | 3P0              |            (3729)                    |             4        |    L8672c99
     59 | Praseodymium | Al          | [Ne].3s2.3p       | 2P*<1/2>         |            (3832)                    |             4        |    L8672c99
     59 | Praseodymium | Mg          | [Ne].3s2          | 1S0              |            (4030)                    |             4        |    L8672c99
     59 | Praseodymium | Na          | [Ne].3s           | 2S<1/2>          |            (4130)                    |             4        |    L8672c99
     59 | Praseodymium | Ne          | 1s2.2s2.2p6       | 1S0              |            (9378)                    |             4        |    L8672c99
     59 | Praseodymium | F           | 1s2.2s2.2p5       | 2P*<3/2>         |            (9632)                    |             4        |    L8672c99
     59 | Praseodymium | O           | 1s2.2s2.2p4       | 3P<2>            |            (9913)                    |             4        |    L8672c99
     59 | Praseodymium | N           | 1s2.2s2.2p3       | (0,3/2)*<3/2>    |           (10175)                    |             4        |    L8672c99
     59 | Praseodymium | C           | 1s2.2s2.2p2       | 3P0              |           (10959)                    |             5        |    L8672c99
     59 | Praseodymium | B           | 1s2.2s2.2p        | 2P*<1/2>         |           (11262)                    |             5        |    L8672c99
     59 | Praseodymium | Be          | 1s2.2s2           | 1S0              |           (11641)                    |             5        |    L8672c99
     59 | Praseodymium | Li          | 1s2.2s            | 2S<1/2>          |           (11895.89)                 |             0.06     |   L16264c99
     59 | Praseodymium | He          | 1s2               | 1S0              |           (48571.71)                 |             0.05     |      L21139
     59 | Praseodymium | H           | 1s                | 2S<1/2>          |           (49722.44)                 |             0.04     |      L19200
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
(a) Designations used in the ground shell lists:
     [Ne] = 1s2.2s2.2p6
     [Ar] = 1s2.2s2.2p6.3s2.3p6
     [Kr] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6
     [Cd] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2
     [Xe] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6

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