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| NIST Atomic Spectra Database Ionization Energies Data
At (all spectra) |
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 7]. 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
--------|----------|-------------|--------------------|-----------------|--------------------------------------|----------------------|-----------
85 | Astatine | At | [Hg].6p5 | 2P*<3/2> | 9.31751 | 0.00008 | L18394
85 | Astatine | Po | [Hg].6p4 | 3P<2> | [17.880] | 0.020 | L15918
85 | Astatine | Bi | [Hg].6p3 | 4S*<3/2> | [26.58] | 0.05 | L15918
85 | Astatine | Pb | [Hg].6p2 | 3P0 | [39.65] | | L15918
85 | Astatine | Tl | [Hg].6p | 2P*<1/2> | [50.39] | | L15918
85 | Astatine | Hg | [Xe].4f14.5d10.6s2 | 1S0 | (72.0) | 2.0 | L8672c99
85 | Astatine | Au | [Xe].4f14.5d10.6s | 2S<1/2> | (85.1) | 2.0 | L8672c99
85 | Astatine | Pt | [Xe].4f14.5d10 | 1S0 | (130.1) | 2.1 | L8672c99
85 | Astatine | Ir | [Xe].4f14.5d9 | 2D<5/2> | (149.0) | 2.2 | L8672c99
85 | Astatine | Os | [Xe].4f14.5d8 | 3F<4> | (169.0) | 2.2 | L8672c99
85 | Astatine | Re | [Xe].4f14.5d7 | 4F<9/2> | (192.1) | 2.4 | L8672c99
85 | Astatine | W | [Xe].4f14.5d6 | 5D<4> | (212.0) | 2.5 | L8672c99
85 | Astatine | Ta | [Xe].4f14.5d5 | 6S<5/2> | (236) | 3 | L8672c99
85 | Astatine | Hf | [Xe].4f14.5d4 | 5D0 | (263) | 3 | L8672c99
85 | Astatine | Lu | [Xe].4f14.5d3 | 4F<3/2> | (287) | 3 | L8672c99
85 | Astatine | Yb | [Xe].4f14.5d2 | 3F<2> | (311) | 3 | L8672c99
85 | Astatine | Tm | [Xe].4f14.5d | 2D<3/2> | (335) | 3 | L8672c99
85 | Astatine | Er | [Xe].4f14 | 1S0 | (452) | 22 | L582
85 | Astatine | Ho | [Cd].4f14.5p5 | 2P*<3/2> | (481) | 24 | L582
85 | Astatine | Dy | [Cd].4f14.5p4 | 3P<2> | (510) | 30 | L582
85 | Astatine | Tb | [Cd].4f14.5p3 | 2P*<3/2> | (540) | 30 | L582
85 | Astatine | Gd | [Cd].4f14.5p2 | 3P0 | (600) | 30 | L582
85 | Astatine | Eu | [Cd].4f14.5p | 2P*<1/2> | (630) | 30 | L582
85 | Astatine | Sm | [Cd].4f14 | 1S0 | (720) | 40 | L582
85 | Astatine | Pm | [Kr].4d10.4f14.5s | 2S<1/2> | (750) | 40 | L582
85 | Astatine | Nd | [Kr].4d10.4f14 | 1S0 | (790) | 40 | L582
85 | Astatine | Pr | [Kr].4d10.4f13 | 2F*<7/2> | (860) | 40 | L582
85 | Astatine | Ce | [Kr].4d10.4f12 | | (920) | 50 | L582
85 | Astatine | La | [Kr].4d10.4f11 | 4I*<15/2> | (990) | 50 | L582
85 | Astatine | Ba | [Kr].4d10.4f10 | 5I<8> | (1050) | 50 | L582
85 | Astatine | Cs | [Kr].4d10.4f9 | 6H*<15/2> | (1120) | 60 | L582
85 | Astatine | Xe | [Kr].4d10.4f8 | 7F<6> | (1180) | 60 | L582
85 | Astatine | I | [Kr].4d10.4f7 | 8S*<7/2> | (1250) | 60 | L582
85 | Astatine | Te | [Kr].4d10.4f6 | 7F0 | (1320) | 70 | L582
85 | Astatine | Sb | [Kr].4d10.4f5 | 6H*<5/2> | (1380) | 70 | L582
85 | Astatine | Sn | [Kr].4d10.4f4 | 5I<4> | (1450) | 70 | L582
85 | Astatine | In | [Kr].4d10.4f3 | 4I*<9/2> | (1510) | 70 | L582
85 | Astatine | Cd | [Kr].4d10.4f2 | 3H<4> | (1590) | 70 | L582
85 | Astatine | Ag | [Kr].4d10.4f | 2F*<5/2> | (1650) | 90 | L582
85 | Astatine | Pd | [Kr].4d10 | 1S0 | (1948) | 4 | L8672c99
85 | Astatine | Rh | [Kr].4d9 | 2D<5/2> | (2007) | 4 | L8672c99
85 | Astatine | Ru | [Kr].4d8 | 3F<4> | (2071) | 4 | L8672c99
85 | Astatine | Tc | [Kr].4d7 | 4F<9/2> | (2139) | 4 | L8672c99
85 | Astatine | Mo | [Kr].4d6 | 5D<4> | (2203) | 4 | L8672c99
85 | Astatine | Nb | [Kr].4d5 | <5/2> | (2266) | 4 | L8672c99
85 | Astatine | Zr | [Kr].4d4 | 5D0 | (2373) | 4 | L8672c99
85 | Astatine | Y | [Kr].4d3 | 4F<3/2> | (2439) | 4 | L8672c99
85 | Astatine | Sr | [Kr].4d2 | 3F<2> | (2510) | 4 | L8672c99
85 | Astatine | Rb | [Kr].4d | 2D<3/2> | (2576) | 4 | L8672c99
85 | Astatine | Kr | [Ar].3d10.4s2.4p6 | 1S0 | (2841) | 4 | L8672c99
85 | Astatine | Br | [Ar].3d10.4s2.4p5 | 2P*<3/2> | (2905) | 4 | L8672c99
85 | Astatine | Se | [Ar].3d10.4s2.4p4 | 3P<2> | (2977) | 4 | L8672c99
85 | Astatine | As | [Ar].3d10.4s2.4p3 | *<3/2> | (3042) | 4 | L8672c99
85 | Astatine | Ge | [Ar].3d10.4s2.4p2 | 3P0 | (3312) | 5 | L8672c99
85 | Astatine | Ga | [Ar].3d10.4s2.4p | 2P*<1/2> | (3388) | 5 | L8672c99
85 | Astatine | Zn | [Ar].3d10.4s2 | 1S0 | (3573) | 5 | L8672c99
85 | Astatine | Cu | [Ar].3d10.4s | 2S<1/2> | [3649] | 3 | L10278
85 | Astatine | Ni | [Ar].3d10 | 1S0 | (5976) | 6 | L8672c99
85 | Astatine | Co | [Ar].3d9 | 2D<5/2> | (6122) | 6 | L8672c99
85 | Astatine | Fe | [Ar].3d8 | 3F<4> | (6279) | 7 | L8672c99
85 | Astatine | Mn | [Ar].3d7 | 4F<9/2> | (6445) | 10 | L8672c99
85 | Astatine | Cr | [Ar].3d6 | <4> | (6604) | 12 | L8672c99
85 | Astatine | V | [Ar].3d5 | <5/2> | (6759) | 15 | L8672c99
85 | Astatine | Ti | [Ar].3d4 | 5D0 | (7068) | 19 | L8672c99
85 | Astatine | Sc | [Ar].3d3 | 4F<3/2> | (7230) | 24 | L8672c99
85 | Astatine | Ca | [Ar].3d2 | 3F<2> | (7410) | 30 | L8672c99
85 | Astatine | K | [Ar].3d | 2D<3/2> | (7570) | 40 | L8672c99
85 | Astatine | Ar | [Ne].3s2.3p6 | 1S0 | (8030) | 40 | L8672c99
85 | Astatine | Cl | [Ne].3s2.3p5 | 2P*<3/2> | (8180) | 50 | L8672c99
85 | Astatine | S | [Ne].3s2.3p4 | 3P<2> | (8330) | 50 | L8672c99
85 | Astatine | P | [Ne].3s2.3p3 | 2P*<3/2> | (8480) | 60 | L8672c99
85 | Astatine | Si | [Ne].3s2.3p2 | 3P0 | (9330) | 60 | L8672c99
85 | Astatine | Al | [Ne].3s2.3p | 2P*<1/2> | (9500) | 70 | L8672c99
85 | Astatine | Mg | [Ne].3s2 | 1S0 | (9830) | 90 | L8672c99
85 | Astatine | Na | [Ne].3s | 2S<1/2> | (9990) | 90 | L8672c99
85 | Astatine | Ne | 1s2.2s2.2p6 | 1S0 | (21210) | 100 | L8672c99
85 | Astatine | F | 1s2.2s2.2p5 | 2P*<3/2> | (21600) | 110 | L8672c99
85 | Astatine | O | 1s2.2s2.2p4 | 3P<2> | (22030) | 120 | L8672c99
85 | Astatine | N | 1s2.2s2.2p3 | (0,3/2)*<3/2> | (22420) | 120 | L8672c99
85 | Astatine | C | 1s2.2s2.2p2 | 3P0 | (25580) | 140 | L8672c99
85 | Astatine | B | 1s2.2s2.2p | 2P*<1/2> | (26090) | 150 | L8672c99
85 | Astatine | Be | 1s2.2s2 | 1S0 | (26730) | 160 | L8672c99
85 | Astatine | Li | 1s2.2s | 2S<1/2> | (27139.0) | 0.4 | L16264c99
85 | Astatine | He | 1s2 | 1S0 | (107930.0) | 0.4 | L21139
85 | Astatine | H | 1s | 2S<1/2> | (109887.2) | 1.5 | 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
[Cd] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2
[Xe] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6
[Hg] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6.4f14.5d10.6s2
(b) Uncertainties of some of the listed values are unknown.
If you did not find the data you need, please inform the ASD Team.
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