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NIST Atomic Spectra Database
Ionization Energies Data

Zr (all spectra)
40 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 5]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

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At. num | El. Name  | Isoel. Seq. | Ground Shells (a) | Ground Level   |        Ionization Energy (eV)        | Uncertainty (b) (eV) | References
--------|-----------|-------------|-------------------|----------------|--------------------------------------|----------------------|-----------
     40 | Zirconium | Zr          | [Kr].4d2.5s2      | 3F<2>          |              6.634126                |           0.000005   |    L21107
     40 | Zirconium | Y           | [Kr].4d2.5s       | 4F<3/2>        |             13.13                    |                      |      L272
     40 | Zirconium | Sr          | [Kr].4d2          | 3F<2>          |            [23.170]                  |           0.004      |     L9267
     40 | Zirconium | Rb          | [Kr].4d           | 2D<3/2>        |             34.41836                 |           0.00006    |    L11645
     40 | Zirconium | Kr          | [Ar].3d10.4s2.4p6 | 1S0            |            [80.348]                  |           0.007      |     L4594
     40 | Zirconium | Br          | [Ar].3d10.4s2.4p5 | 2P*<3/2>       |            [96.38]                   |           0.04       |    L19460
     40 | Zirconium | Se          | [Ar].3d10.4s2.4p4 | 3P<2>          |           (112.0)                    |           2.0        |  L8672c99
     40 | Zirconium | As          | [Ar].3d10.4s2.4p3 | 4S*<3/2>       |           [133.7]                    |           0.5        |     L5287
     40 | Zirconium | Ge          | [Ar].3d10.4s2.4p2 | 3P0            |           (153.0)                    |           2.2        |  L8672c99
     40 | Zirconium | Ga          | [Ar].3d10.4s2.4p  | 2P*<1/2>       |           [172.02]                   |           0.05       |     L6833
     40 | Zirconium | Zn          | [Ar].3d10.4s2     | 1S0            |           [214.9]                    |           0.4        |     L6976
     40 | Zirconium | Cu          | [Ar].3d10.4s      | 2S<1/2>        |            236.252                   |           0.025      |     L4917
     40 | Zirconium | Ni          | [Ar].3d10         | 1S0            |           (426)                      |           3          |  L8672c99
     40 | Zirconium | Co          | [Ar].3d9          | 2D<5/2>        |           (470)                      |           3          |  L8672c99
     40 | Zirconium | Fe          | [Ar].3d8          | 3F<4>          |           (520)                      |           3          |  L8672c99
     40 | Zirconium | Mn          | [Ar].3d7          | 4F<9/2>        |           (573)                      |           3          |  L8672c99
     40 | Zirconium | Cr          | [Ar].3d6          | 5D<4>          |           (622)                      |           3          |  L8672c99
     40 | Zirconium | V           | [Ar].3d5          | 6S<5/2>        |           (690)                      |           3          |  L8672c99
     40 | Zirconium | Ti          | [Ar].3d4          | 5D0            |           (745)                      |           3          |  L8672c99
     40 | Zirconium | Sc          | [Ar].3d3          | 4F<3/2>        |           (803)                      |           4          |  L8672c99
     40 | Zirconium | Ca          | [Ar].3d2          | 3F<2>          |           (863)                      |           4          |  L8672c99
     40 | Zirconium | K           | [Ar].3d           | 2D<3/2>        |           (922)                      |           4          |  L8672c99
     40 | Zirconium | Ar          | [Ne].3s2.3p6      | 1S0            |          [1092]                      |           3          |    L11770
     40 | Zirconium | Cl          | [Ne].3s2.3p5      | 2P*<3/2>       |          [1144.7]                    |           1.2        |    L11770
     40 | Zirconium | S           | [Ne].3s2.3p4      | 3P<2>          |          [1205.4]                    |           1.7        |    L11770
     40 | Zirconium | P           | [Ne].3s2.3p3      | 4S*<3/2>       |          [1277]                      |           5          |    L11770
     40 | Zirconium | Si          | [Ne].3s2.3p2      | 3P0            |          [1344]                      |           3          |    L11770
     40 | Zirconium | Al          | [Ne].3s2.3p       | 2P*<1/2>       |          [1392]                      |           7          |    L11770
     40 | Zirconium | Mg          | [Ne].3s2          | 1S0            |          [1525.1]                    |           2.2        |    L11770
     40 | Zirconium | Na          | [Ne].3s           | 2S<1/2>        |          [1582.37]                   |           0.05       |    L11770
     40 | Zirconium | Ne          | 1s2.2s2.2p6       | 1S0            |          [3788.0]                    |           2.1        |    L11770
     40 | Zirconium | F           | 1s2.2s2.2p5       | 2P*<3/2>       |          [3950]                      |           7          |    L11770
     40 | Zirconium | O           | 1s2.2s2.2p4       | 3P<2>          |          [4127]                      |           9          |    L11770
     40 | Zirconium | N           | 1s2.2s2.2p3       | (0,3/2)*<3/2>  |          [4300]                      |          30          |    L11770
     40 | Zirconium | C           | 1s2.2s2.2p2       | 3P0            |          [4553]                      |           5          |    L11770
     40 | Zirconium | B           | 1s2.2s2.2p        | 2P*<1/2>       |          [4744]                      |           3          |    L11770
     40 | Zirconium | Be          | 1s2.2s2           | 1S0            |          [4991]                      |           5          |    L11770
     40 | Zirconium | Li          | 1s2.2s            | 2S<1/2>        |          (5146.935)                  |           0.014      | L16264c99
     40 | Zirconium | He          | 1s2               | 1S0            |         (21516.471)                  |           0.006      |    L21139
     40 | Zirconium | H           | 1s                | 2S<1/2>        |         (22236.712)                  |           0.004      |    L19200
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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
(b) Uncertainties of some of the listed values are unknown. 

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