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NIST Atomic Spectra Database
Ionization Energies Data

Ho (all spectra)
67 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
--------|----------|-------------|-------------------|--------------------|--------------------------------------|----------------------|------------
     67 | Holmium  | Ho          | [Xe].4f11.6s2     | 4I*<15/2>          |                6.0215                |             0.0006   |      L4277
     67 | Holmium  | Dy          | [Xe].4f11.6s      | (15/2,1/2)*<8>     |              [11.781]                |             0.020    | L19870c180
     67 | Holmium  | Tb          | [Xe].4f11         | 4I*<15/2>          |              [22.79]                 |             0.03     | L19883c180
     67 | Holmium  | Gd          | [Xe].4f10         | 5I<8>              |              [42.52]                 |             0.08     | L19883c180
     67 | Holmium  | Eu          | [Xe].4f9          | 6H*<15/2>          |              [63.9]                  |             0.3      |      L4095
     67 | Holmium  | Sm          | [Cd].4f9.5p5      |                    |              (95)                    |             5        |       L582
     67 | Holmium  | Pm          | [Cd].4f9.5p4      | *                  |             (112)                    |             6        |       L582
     67 | Holmium  | Nd          | [Cd].4f9.5p3      |                    |             (129)                    |             6        |       L582
     67 | Holmium  | Pr          | [Cd].4f10.5p      | *                  |             (155)                    |             8        |       L582
     67 | Holmium  | Ce          | [Cd].4f9.5p       |                    |             (173)                    |             9        |       L582
     67 | Holmium  | La          | [Cd].4f9          | *                  |             (197)                    |            10        |       L582
     67 | Holmium  | Ba          | [Cd].4f8          |                    |             (229)                    |            12        |       L582
     67 | Holmium  | Cs          | [Cd].4f7          | *                  |             (263)                    |            14        |       L582
     67 | Holmium  | Xe          | [Cd].4f6          |                    |             (284)                    |            14        |       L582
     67 | Holmium  | I           | [Kr].4d10.4f6.5s  |                    |             (305)                    |            15        |       L582
     67 | Holmium  | Te          | [Cd].4f4          |                    |             (340)                    |            17        |       L582
     67 | Holmium  | Sb          | [Kr].4d10.4f5     | 6H*<5/2>           |             (373)                    |            19        |       L582
     67 | Holmium  | Sn          | [Kr].4d10.4f4     | 5I<4>              |             (408)                    |            20        |       L582
     67 | Holmium  | In          | [Kr].4d10.4f3     | 4I*<9/2>           |             (441)                    |            22        |       L582
     67 | Holmium  | Cd          | [Kr].4d10.4f2     | 3H<4>              |             (475)                    |            24        |       L582
     67 | Holmium  | Ag          | [Kr].4d10.4f      | 2F*<5/2>           |             (510)                    |             4        |    L582c99
     67 | Holmium  | Pd          | [Kr].4d10         | 1S0                |             (715)                    |             4        |   L8672c99
     67 | Holmium  | Rh          | [Kr].4d9          | 2D<5/2>            |             (755)                    |             4        |   L8672c99
     67 | Holmium  | Ru          | [Kr].4d8          | 3F<4>              |             (797)                    |             4        |   L8672c99
     67 | Holmium  | Tc          | [Kr].4d7          | 4F<9/2>            |             (842)                    |             4        |   L8672c99
     67 | Holmium  | Mo          | [Kr].4d6          | 5D<4>              |             (885)                    |             4        |   L8672c99
     67 | Holmium  | Nb          | [Kr].4d5          | 6S<5/2>            |             (929)                    |             4        |   L8672c99
     67 | Holmium  | Zr          | [Kr].4d4          | 5D0                |             (985)                    |             4        |   L8672c99
     67 | Holmium  | Y           | [Kr].4d3          | 4F<3/2>            |            (1029)                    |             4        |   L8672c99
     67 | Holmium  | Sr          | [Kr].4d2          | 3F<2>              |            (1077)                    |             4        |   L8672c99
     67 | Holmium  | Rb          | [Kr].4d           | 2D<3/2>            |            (1122)                    |             4        |   L8672c99
     67 | Holmium  | Kr          | [Ar].3d10.4s2.4p6 | 1S0                |            (1300)                    |             4        |   L8672c99
     67 | Holmium  | Br          | [Ar].3d10.4s2.4p5 | 2P*<3/2>           |            (1346)                    |             4        |   L8672c99
     67 | Holmium  | Se          | [Ar].3d10.4s2.4p4 | 3P<2>              |            (1395)                    |             5        |   L8672c99
     67 | Holmium  | As          | [Ar].3d10.4s2.4p3 | 4S*<3/2>           |            (1443)                    |             5        |   L8672c99
     67 | Holmium  | Ge          | [Ar].3d10.4s2.4p2 | 3P0                |            (1545)                    |             5        |   L8672c99
     67 | Holmium  | Ga          | [Ar].3d10.4s2.4p  | 2P*<1/2>           |            (1598)                    |             5        |   L8672c99
     67 | Holmium  | Zn          | [Ar].3d10.4s2     | 1S0                |            (1719)                    |             4        |   L8672c99
     67 | Holmium  | Cu          | [Ar].3d10.4s      | 2S<1/2>            |            [1773.6]                  |             0.9      |     L10278
     67 | Holmium  | Ni          | [Ar].3d10         | 1S0                |            (3018)                    |             4        |   L8672c99
     67 | Holmium  | Co          | [Ar].3d9          | 2D<5/2>            |            (3125)                    |             4        |   L8672c99
     67 | Holmium  | Fe          | [Ar].3d8          | 3F<4>              |            (3238)                    |             4        |   L8672c99
     67 | Holmium  | Mn          | [Ar].3d7          | 4F<9/2>            |            (3359)                    |             4        |   L8672c99
     67 | Holmium  | Cr          | [Ar].3d6          | <4>                |            (3476)                    |             4        |   L8672c99
     67 | Holmium  | V           | [Ar].3d5          | <5/2>              |            (3592)                    |             4        |   L8672c99
     67 | Holmium  | Ti          | [Ar].3d4          | 5D0                |            (3760)                    |             4        |   L8672c99
     67 | Holmium  | Sc          | [Ar].3d3          | 4F<3/2>            |            (3880)                    |             4        |   L8672c99
     67 | Holmium  | Ca          | [Ar].3d2          | 3F<2>              |            (4009)                    |             4        |   L8672c99
     67 | Holmium  | K           | [Ar].3d           | 2D<3/2>            |            (4131)                    |             4        |   L8672c99
     67 | Holmium  | Ar          | [Ne].3s2.3p6      | 1S0                |            (4469)                    |             4        |   L8672c99
     67 | Holmium  | Cl          | [Ne].3s2.3p5      | 2P*<3/2>           |            (4576)                    |             4        |   L8672c99
     67 | Holmium  | S           | [Ne].3s2.3p4      | 3P<2>              |            (4693)                    |             4        |   L8672c99
     67 | Holmium  | P           | [Ne].3s2.3p3      | 2P*<3/2>           |            (4802)                    |             4        |   L8672c99
     67 | Holmium  | Si          | [Ne].3s2.3p2      | 3P0                |            (5135)                    |             5        |   L8672c99
     67 | Holmium  | Al          | [Ne].3s2.3p       | 2P*<1/2>           |            (5258)                    |             5        |   L8672c99
     67 | Holmium  | Mg          | [Ne].3s2          | 1S0                |            (5494)                    |             5        |   L8672c99
     67 | Holmium  | Na          | [Ne].3s           | 2S<1/2>            |            (5611)                    |             5        |   L8672c99
     67 | Holmium  | Ne          | 1s2.2s2.2p6       | 1S0                |           (12495)                    |             6        |   L8672c99
     67 | Holmium  | F           | 1s2.2s2.2p5       | 2P*<3/2>           |           (12790)                    |             6        |   L8672c99
     67 | Holmium  | O           | 1s2.2s2.2p4       | 3P<2>              |           (13116)                    |             7        |   L8672c99
     67 | Holmium  | N           | 1s2.2s2.2p3       | (0,3/2)*<3/2>      |           (13417)                    |            10        |   L8672c99
     67 | Holmium  | C           | 1s2.2s2.2p2       | 3P0                |           (14639)                    |            12        |   L8672c99
     67 | Holmium  | B           | 1s2.2s2.2p        | 2P*<1/2>           |           (14998)                    |            15        |   L8672c99
     67 | Holmium  | Be          | 1s2.2s2           | 1S0                |           (15448)                    |            19        |   L8672c99
     67 | Holmium  | Li          | 1s2.2s            | 2S<1/2>            |           (15745.77)                 |             0.11     |  L16264c99
     67 | Holmium  | He          | 1s2               | 1S0                |           (63772.42)                 |             0.11     |     L21139
     67 | Holmium  | H           | 1s                | 2S<1/2>            |           (65137.13)                 |             0.16     |     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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