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| NIST Atomic Spectra Database Ionization Energies Data
Fm (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, October 10]. 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
--------|----------|-------------|--------------------|-----------------|--------------------------------------|----------------------|-----------
100 | Fermium | Fm | [Rn].5f12.7s2 | 3H<6> | [6.50] | 0.07 | L16359
100 | Fermium | Es | [Rn].5f12.7s | 4H<13/2> | [12.4] | 0.4 | L13741c99
100 | Fermium | Cf | [Rn].5f12 | 3H<6> | [23.2] | 0.4 | L13741c99
100 | Fermium | Bk | [Rn].5f11 | 4I*<15/2> | [39.3] | 0.4 | L13741c99
100 | Fermium | Cm | [Rn].5f10 | 5I<8> | (55.0) | 1.9 | L8672c99
100 | Fermium | Am | [Rn].5f9 | 6H*<15/2> | (74.0) | 2.0 | L8672c99
100 | Fermium | Pu | [Rn].5f8 | 7F<6> | (93.0) | 2.0 | L8672c99
100 | Fermium | Np | [Rn].5f7 | 8S*<7/2> | (120.0) | 2.1 | L8672c99
100 | Fermium | U | [Rn].5f6 | 7F0 | (136.0) | 2.2 | L8672c99
100 | Fermium | Pa | [Rn].5f5 | 6H*<5/2> | (162.0) | 2.2 | L8672c99
100 | Fermium | Th | [Rn].5f4 | 5I<4> | (185) | 9 | L582
100 | Fermium | Ac | [Hg].5f7.6p2 | * | (209) | 10 | L582
100 | Fermium | Ra | [Hg].5f6.6p2 | | (237) | 12 | L582
100 | Fermium | Fr | [Hg].5f5.6p2 | * | (257) | 12 | L582
100 | Fermium | Rn | [Hg].5f5.6p | | (276) | 14 | L582
100 | Fermium | At | [Hg].5f5 | * | (300) | 15 | L582
100 | Fermium | Po | [Hg].5f4 | | (326) | 16 | L582
100 | Fermium | Bi | [Hg].5f3 | * | (351) | 17 | L582
100 | Fermium | Pb | [Hg].5f2 | | (377) | 19 | L582
100 | Fermium | Tl | [Hg].5f | 2F*<5/2> | (402) | 20 | L582
100 | Fermium | Hg | [Xe].4f14.5d10.6s2 | 1S0 | (430) | 4 | L8672c99
100 | Fermium | Au | [Xe].4f14.5d10.6s | 2S<1/2> | (453) | 4 | L8672c99
100 | Fermium | Pt | [Xe].4f14.5d10 | 1S0 | (616) | 4 | L8672c99
100 | Fermium | Ir | [Xe].4f14.5d9 | 2D<5/2> | (647) | 4 | L8672c99
100 | Fermium | Os | [Xe].4f14.5d8 | 3F<4> | (680) | 4 | L8672c99
100 | Fermium | Re | [Xe].4f14.5d7 | 4F<9/2> | (716) | 4 | L8672c99
100 | Fermium | W | [Xe].4f14.5d6 | 5D<4> | (749) | 4 | L8672c99
100 | Fermium | Ta | [Xe].4f14.5d5 | 6S<5/2> | (782) | 4 | L8672c99
100 | Fermium | Hf | [Xe].4f14.5d4 | 5D0 | (837) | 4 | L8672c99
100 | Fermium | Lu | [Xe].4f14.5d3 | 4F<3/2> | (871) | 4 | L8672c99
100 | Fermium | Yb | [Xe].4f14.5d2 | 3F<2> | (909) | 4 | L8672c99
100 | Fermium | Tm | [Xe].4f14.5d | 2D<3/2> | (944) | 4 | L8672c99
100 | Fermium | Er | [Xe].4f14 | 1S0 | (1110) | 50 | L582
100 | Fermium | Ho | [Cd].4f14.5p5 | 2P*<3/2> | (1150) | 60 | L582
100 | Fermium | Dy | [Cd].4f14.5p4 | 3P<2> | (1190) | 60 | L582
100 | Fermium | Tb | [Cd].4f14.5p3 | 2P*<3/2> | (1230) | 60 | L582
100 | Fermium | Gd | [Cd].4f14.5p2 | 3P0 | (1370) | 70 | L582
100 | Fermium | Eu | [Cd].4f14.5p | 2P*<1/2> | (1420) | 70 | L582
100 | Fermium | Sm | [Cd].4f14 | 1S0 | (1550) | 80 | L582
100 | Fermium | Pm | [Kr].4d10.4f14.5s | 2S<1/2> | (1600) | 80 | L582
100 | Fermium | Nd | [Kr].4d10.4f14 | 1S0 | (1770) | 90 | L582
100 | Fermium | Pr | [Kr].4d10.4f13 | 2F*<7/2> | (1850) | 90 | L582
100 | Fermium | Ce | [Kr].4d10.4f12 | | (1940) | 100 | L582
100 | Fermium | La | [Kr].4d10.4f11 | 4I*<15/2> | (2030) | 100 | L582
100 | Fermium | Ba | [Kr].4d10.4f10 | 5I<8> | (2120) | 110 | L582
100 | Fermium | Cs | [Kr].4d10.4f9 | 6H*<15/2> | (2210) | 110 | L582
100 | Fermium | Xe | [Kr].4d10.4f8 | 7F<6> | (2300) | 120 | L582
100 | Fermium | I | [Kr].4d10.4f7 | 8S*<7/2> | (2390) | 120 | L582
100 | Fermium | Te | [Kr].4d10.4f6 | 7F0 | (2490) | 120 | L582
100 | Fermium | Sb | [Kr].4d10.4f5 | 6H*<5/2> | (2590) | 120 | L582
100 | Fermium | Sn | [Kr].4d10.4f4 | 5I<4> | (2680) | 140 | L582
100 | Fermium | In | [Kr].4d10.4f3 | 4I*<9/2> | (2760) | 140 | L582
100 | Fermium | Cd | [Kr].4d10.4f2 | 3H<4> | (2850) | 150 | L582
100 | Fermium | Ag | [Kr].4d10.4f | 2F*<5/2> | (2950) | 150 | L582
100 | Fermium | Pd | [Kr].4d10 | 1S0 | (3403) | 5 | L8672c99
100 | Fermium | Rh | [Kr].4d9 | 2D<5/2> | (3480) | 5 | L8672c99
100 | Fermium | Ru | [Kr].4d8 | 3F<4> | (3561) | 5 | L8672c99
100 | Fermium | Tc | [Kr].4d7 | 4F<9/2> | (3647) | 6 | L8672c99
100 | Fermium | Mo | [Kr].4d6 | 5D<4> | (3730) | 6 | L8672c99
100 | Fermium | Nb | [Kr].4d5 | <5/2> | (3810) | 7 | L8672c99
100 | Fermium | Zr | [Kr].4d4 | 5D0 | (3986) | 10 | L8672c99
100 | Fermium | Y | [Kr].4d3 | 4F<3/2> | (4070) | 12 | L8672c99
100 | Fermium | Sr | [Kr].4d2 | 3F<2> | (4160) | 15 | L8672c99
100 | Fermium | Rb | [Kr].4d | 2D<3/2> | (4245) | 19 | L8672c99
100 | Fermium | Kr | [Ar].3d10.4s2.4p6 | 1S0 | (4586) | 24 | L8672c99
100 | Fermium | Br | [Ar].3d10.4s2.4p5 | 2P*<3/2> | (4670) | 30 | L8672c99
100 | Fermium | Se | [Ar].3d10.4s2.4p4 | 3P<2> | (4760) | 40 | L8672c99
100 | Fermium | As | [Ar].3d10.4s2.4p3 | *<3/2> | (4840) | 40 | L8672c99
100 | Fermium | Ge | [Ar].3d10.4s2.4p2 | 3P0 | (5420) | 50 | L8672c99
100 | Fermium | Ga | [Ar].3d10.4s2.4p | 2P*<1/2> | (5510) | 50 | L8672c99
100 | Fermium | Zn | [Ar].3d10.4s2 | 1S0 | (5760) | 60 | L8672c99
100 | Fermium | Cu | [Ar].3d10.4s | 2S<1/2> | (5860) | 60 | L8672c99
100 | Fermium | Ni | [Ar].3d10 | 1S0 | (9200) | 70 | L8672c99
100 | Fermium | Co | [Ar].3d9 | 2D<5/2> | (9370) | 90 | L8672c99
100 | Fermium | Fe | [Ar].3d8 | 3F<4> | (9570) | 90 | L8672c99
100 | Fermium | Mn | [Ar].3d7 | 4F<9/2> | (9770) | 100 | L8672c99
100 | Fermium | Cr | [Ar].3d6 | <4> | (9970) | 110 | L8672c99
100 | Fermium | V | [Ar].3d5 | <5/2> | (10160) | 120 | L8672c99
100 | Fermium | Ti | [Ar].3d4 | 5D0 | (10660) | 120 | L8672c99
100 | Fermium | Sc | [Ar].3d3 | 4F<3/2> | (10860) | 140 | L8672c99
100 | Fermium | Ca | [Ar].3d2 | 3F<2> | (11080) | 150 | L8672c99
100 | Fermium | K | [Ar].3d | 2D<3/2> | (11280) | 160 | L8672c99
100 | Fermium | Ar | [Ne].3s2.3p6 | 1S0 | (11850) | 170 | L8672c99
100 | Fermium | Cl | [Ne].3s2.3p5 | 2P*<3/2> | (12020) | 190 | L8672c99
100 | Fermium | S | [Ne].3s2.3p4 | 3P<2> | (12220) | 200 | L8672c99
100 | Fermium | P | [Ne].3s2.3p3 | 2P*<3/2> | (12390) | 220 | L8672c99
100 | Fermium | Si | [Ne].3s2.3p2 | 3P0 | (14180) | 240 | L8672c99
100 | Fermium | Al | [Ne].3s2.3p | 2P*<1/2> | (14400) | 250 | L8672c99
100 | Fermium | Mg | [Ne].3s2 | 1S0 | (14800) | 300 | L8672c99
100 | Fermium | Na | [Ne].3s | 2S<1/2> | (15000) | 300 | L8672c99
100 | Fermium | Ne | 1s2.2s2.2p6 | 1S0 | (30300) | 300 | L8672c99
100 | Fermium | F | 1s2.2s2.2p5 | 2P*<3/2> | (30800) | 300 | L8672c99
100 | Fermium | O | 1s2.2s2.2p4 | 3P<2> | (31300) | 400 | L8672c99
100 | Fermium | N | 1s2.2s2.2p3 | (0,3/2)*<3/2> | (31800) | 400 | L8672c99
100 | Fermium | C | 1s2.2s2.2p2 | 3P0 | (38400) | 400 | L8672c99
100 | Fermium | B | 1s2.2s2.2p | 2P*<1/2> | (39100) | 400 | L8672c99
100 | Fermium | Be | 1s2.2s2 | 1S0 | (40000) | 400 | L8672c99
100 | Fermium | Li | 1s2.2s | 2S<1/2> | (40482.2) | 1.1 | L16264c99
100 | Fermium | He | 1s2 | 1S0 | (158171) | 6 | L12128
100 | Fermium | H | 1s | 2S<1/2> | (160808) | 6 | 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
[Rn] = 1s2.2s2.2p6.3s2.3p6.3d10.4s2.4p6.4d10.5s2.5p6.4f14.5d10.6s2.6p6
If you did not find the data you need, please inform the ASD Team.
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