NIST Atomic Spectra Database Ionization Energies Data
Es (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 2]. 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 (eV) | References --------|-------------|-------------|--------------------|-----------------|--------------------------------------|----------------------|----------- 99 | Einsteinium | Es | [Rn].5f11.7s2 | 4I*<15/2> | 6.36840 | 0.00006 | L22449 99 | Einsteinium | Cf | [Rn].5f11.7s | 5I*<8> | [12.2] | 0.4 | L13741c99 99 | Einsteinium | Bk | [Rn].5f11 | 4I*<15/2> | [22.7] | 0.4 | L13741c99 99 | Einsteinium | Cm | [Rn].5f10 | 5I<8> | [38.8] | 0.4 | L13741c99 99 | Einsteinium | Am | [Rn].5f9 | 6H*<15/2> | (54.1) | 1.9 | L8672c99 99 | Einsteinium | Pu | [Rn].5f8 | 7F<6> | (71.0) | 2.0 | L8672c99 99 | Einsteinium | Np | [Rn].5f7 | 8S*<7/2> | (97.0) | 2.0 | L8672c99 99 | Einsteinium | U | [Rn].5f6 | 7F0 | (112.9) | 2.1 | L8672c99 99 | Einsteinium | Pa | [Rn].5f5 | 6H*<5/2> | (137.0) | 2.2 | L8672c99 99 | Einsteinium | Th | [Rn].5f4 | 5I<4> | (157) | 7 | L582 99 | Einsteinium | Ac | [Hg].5f7.6p2 | * | (180) | 9 | L582 99 | Einsteinium | Ra | [Hg].5f6.6p2 | | (206) | 10 | L582 99 | Einsteinium | Fr | [Hg].5f5.6p2 | * | (231) | 11 | L582 99 | Einsteinium | Rn | [Hg].5f4.6p2 | | (252) | 12 | L582 99 | Einsteinium | At | [Hg].5f4.6p | * | (270) | 14 | L582 99 | Einsteinium | Po | [Hg].5f4 | | (294) | 15 | L582 99 | Einsteinium | Bi | [Hg].5f3 | * | (317) | 16 | L582 99 | Einsteinium | Pb | [Hg].5f2 | | (342) | 17 | L582 99 | Einsteinium | Tl | [Hg].5f | 2F*<5/2> | (367) | 19 | L582 99 | Einsteinium | Hg | [Xe].4f14.5d10.6s2 | 1S0 | (398) | 4 | L8672c99 99 | Einsteinium | Au | [Xe].4f14.5d10.6s | 2S<1/2> | (421) | 4 | L8672c99 99 | Einsteinium | Pt | [Xe].4f14.5d10 | 1S0 | (576) | 4 | L8672c99 99 | Einsteinium | Ir | [Xe].4f14.5d9 | 2D<5/2> | (606) | 4 | L8672c99 99 | Einsteinium | Os | [Xe].4f14.5d8 | 3F<4> | (638) | 4 | L8672c99 99 | Einsteinium | Re | [Xe].4f14.5d7 | 4F<9/2> | (672) | 4 | L8672c99 99 | Einsteinium | W | [Xe].4f14.5d6 | 5D<4> | (705) | 4 | L8672c99 99 | Einsteinium | Ta | [Xe].4f14.5d5 | 6S<5/2> | (738) | 4 | L8672c99 99 | Einsteinium | Hf | [Xe].4f14.5d4 | 5D0 | (790) | 4 | L8672c99 99 | Einsteinium | Lu | [Xe].4f14.5d3 | 4F<3/2> | (824) | 4 | L8672c99 99 | Einsteinium | Yb | [Xe].4f14.5d2 | 3F<2> | (861) | 4 | L8672c99 99 | Einsteinium | Tm | [Xe].4f14.5d | 2D<3/2> | (895) | 4 | L8672c99 99 | Einsteinium | Er | [Xe].4f14 | 1S0 | (1060) | 50 | L582 99 | Einsteinium | Ho | [Cd].4f14.5p5 | 2P*<3/2> | (1100) | 50 | L582 99 | Einsteinium | Dy | [Cd].4f14.5p4 | 3P<2> | (1140) | 60 | L582 99 | Einsteinium | Tb | [Cd].4f14.5p3 | 2P*<3/2> | (1180) | 60 | L582 99 | Einsteinium | Gd | [Cd].4f14.5p2 | 3P0 | (1310) | 70 | L582 99 | Einsteinium | Eu | [Cd].4f14.5p | 2P*<1/2> | (1360) | 70 | L582 99 | Einsteinium | Sm | [Cd].4f14 | 1S0 | (1480) | 70 | L582 99 | Einsteinium | Pm | [Kr].4d10.4f14.5s | 2S<1/2> | (1530) | 80 | L582 99 | Einsteinium | Nd | [Kr].4d10.4f14 | 1S0 | (1690) | 80 | L582 99 | Einsteinium | Pr | [Kr].4d10.4f13 | 2F*<7/2> | (1780) | 90 | L582 99 | Einsteinium | Ce | [Kr].4d10.4f12 | | (1870) | 90 | L582 99 | Einsteinium | La | [Kr].4d10.4f11 | 4I*<15/2> | (1950) | 100 | L582 99 | Einsteinium | Ba | [Kr].4d10.4f10 | 5I<8> | (2040) | 100 | L582 99 | Einsteinium | Cs | [Kr].4d10.4f9 | 6H*<15/2> | (2130) | 110 | L582 99 | Einsteinium | Xe | [Kr].4d10.4f8 | 7F<6> | (2220) | 110 | L582 99 | Einsteinium | I | [Kr].4d10.4f7 | 8S*<7/2> | (2300) | 120 | L582 99 | Einsteinium | Te | [Kr].4d10.4f6 | 7F0 | (2410) | 120 | L582 99 | Einsteinium | Sb | [Kr].4d10.4f5 | 6H*<5/2> | (2490) | 120 | L582 99 | Einsteinium | Sn | [Kr].4d10.4f4 | 5I<4> | (2580) | 120 | L582 99 | Einsteinium | In | [Kr].4d10.4f3 | 4I*<9/2> | (2680) | 140 | L582 99 | Einsteinium | Cd | [Kr].4d10.4f2 | 3H<4> | (2760) | 140 | L582 99 | Einsteinium | Ag | [Kr].4d10.4f | 2F*<5/2> | (2850) | 140 | L582 99 | Einsteinium | Pd | [Kr].4d10 | 1S0 | (3294) | 5 | L8672c99 99 | Einsteinium | Rh | [Kr].4d9 | 2D<5/2> | (3370) | 5 | L8672c99 99 | Einsteinium | Ru | [Kr].4d8 | 3F<4> | (3449) | 5 | L8672c99 99 | Einsteinium | Tc | [Kr].4d7 | 4F<9/2> | (3535) | 5 | L8672c99 99 | Einsteinium | Mo | [Kr].4d6 | 5D<4> | (3616) | 6 | L8672c99 99 | Einsteinium | Nb | [Kr].4d5 | <5/2> | (3694) | 6 | L8672c99 99 | Einsteinium | Zr | [Kr].4d4 | 5D0 | (3866) | 7 | L8672c99 99 | Einsteinium | Y | [Kr].4d3 | 4F<3/2> | (3947) | 10 | L8672c99 99 | Einsteinium | Sr | [Kr].4d2 | 3F<2> | (4038) | 12 | L8672c99 99 | Einsteinium | Rb | [Kr].4d | 2D<3/2> | (4120) | 15 | L8672c99 99 | Einsteinium | Kr | [Ar].3d10.4s2.4p6 | 1S0 | (4456) | 19 | L8672c99 99 | Einsteinium | Br | [Ar].3d10.4s2.4p5 | 2P*<3/2> | (4537) | 24 | L8672c99 99 | Einsteinium | Se | [Ar].3d10.4s2.4p4 | 3P<2> | (4620) | 30 | L8672c99 99 | Einsteinium | As | [Ar].3d10.4s2.4p3 | *<3/2> | (4700) | 40 | L8672c99 99 | Einsteinium | Ge | [Ar].3d10.4s2.4p2 | 3P0 | (5260) | 40 | L8672c99 99 | Einsteinium | Ga | [Ar].3d10.4s2.4p | 2P*<1/2> | (5350) | 50 | L8672c99 99 | Einsteinium | Zn | [Ar].3d10.4s2 | 1S0 | (5600) | 50 | L8672c99 99 | Einsteinium | Cu | [Ar].3d10.4s | 2S<1/2> | (5690) | 60 | L8672c99 99 | Einsteinium | Ni | [Ar].3d10 | 1S0 | (8960) | 60 | L8672c99 99 | Einsteinium | Co | [Ar].3d9 | 2D<5/2> | (9140) | 70 | L8672c99 99 | Einsteinium | Fe | [Ar].3d8 | 3F<4> | (9330) | 90 | L8672c99 99 | Einsteinium | Mn | [Ar].3d7 | 4F<9/2> | (9530) | 90 | L8672c99 99 | Einsteinium | Cr | [Ar].3d6 | <4> | (9720) | 100 | L8672c99 99 | Einsteinium | V | [Ar].3d5 | <5/2> | (9910) | 110 | L8672c99 99 | Einsteinium | Ti | [Ar].3d4 | 5D0 | (10400) | 120 | L8672c99 99 | Einsteinium | Sc | [Ar].3d3 | 4F<3/2> | (10590) | 120 | L8672c99 99 | Einsteinium | Ca | [Ar].3d2 | 3F<2> | (10810) | 140 | L8672c99 99 | Einsteinium | K | [Ar].3d | 2D<3/2> | (11010) | 150 | L8672c99 99 | Einsteinium | Ar | [Ne].3s2.3p6 | 1S0 | (11570) | 160 | L8672c99 99 | Einsteinium | Cl | [Ne].3s2.3p5 | 2P*<3/2> | (11740) | 170 | L8672c99 99 | Einsteinium | S | [Ne].3s2.3p4 | 3P<2> | (11930) | 190 | L8672c99 99 | Einsteinium | P | [Ne].3s2.3p3 | 2P*<3/2> | (12110) | 200 | L8672c99 99 | Einsteinium | Si | [Ne].3s2.3p2 | 3P0 | (13810) | 220 | L8672c99 99 | Einsteinium | Al | [Ne].3s2.3p | 2P*<1/2> | (14030) | 240 | L8672c99 99 | Einsteinium | Mg | [Ne].3s2 | 1S0 | (14460) | 250 | L8672c99 99 | Einsteinium | Na | [Ne].3s | 2S<1/2> | (14700) | 300 | L8672c99 99 | Einsteinium | Ne | 1s2.2s2.2p6 | 1S0 | (29700) | 300 | L8672c99 99 | Einsteinium | F | 1s2.2s2.2p5 | 2P*<3/2> | (30100) | 300 | L8672c99 99 | Einsteinium | O | 1s2.2s2.2p4 | 3P<2> | (30700) | 300 | L8672c99 99 | Einsteinium | N | 1s2.2s2.2p3 | (0,3/2)*<3/2> | (31100) | 400 | L8672c99 99 | Einsteinium | C | 1s2.2s2.2p2 | 3P0 | (37400) | 400 | L8672c99 99 | Einsteinium | B | 1s2.2s2.2p | 2P*<1/2> | (38100) | 400 | L8672c99 99 | Einsteinium | Be | 1s2.2s2 | 1S0 | (38900) | 400 | L8672c99 99 | Einsteinium | Li | 1s2.2s | 2S<1/2> | (39451.4) | 1.0 | L16264c99 99 | Einsteinium | He | 1s2 | 1S0 | (154344) | 6 | L12128 99 | Einsteinium | H | 1s | 2S<1/2> | (156927) | 6 | 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 [Hg] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6.4f14.5d10.6s2 [Rn] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6.4f14.5d10.6s2.6p6
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