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| NIST Atomic Spectra Database Ionization Energies Data
Ac (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, April 28]. 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
--------|----------|-------------|--------------------|-----------------|--------------------------------------|----------------------|----------------------
89 | Actinium | Ac | [Rn].6d.7s2 | 2D<3/2> | 5.380235 | 0.000012 | L22136,L17893
89 | Actinium | Ra | [Rn].7s2 | 1S0 | [11.75] | 0.03 | L15123
89 | Actinium | Fr | [Rn].7s | 2S<1/2> | [17.436] | 0.006 | L22136,L12354,L22076
89 | Actinium | Rn | [Hg].6p6 | 1S0 | [44.8] | 1.4 | L13741
89 | Actinium | At | [Hg].6p5 | 2P*<3/2> | (55.0) | 1.9 | L8672c99
89 | Actinium | Po | [Hg].6p4 | 3P<2> | (67.0) | 2.0 | L8672c99
89 | Actinium | Bi | [Hg].6p3 | 4S*<3/2> | (79.0) | 2.0 | L8672c99
89 | Actinium | Pb | [Hg].6p2 | 3P0 | (98.9) | 2.1 | L8672c99
89 | Actinium | Tl | [Hg].6p | 2P*<1/2> | (113.9) | 2.2 | L8672c99
89 | Actinium | Hg | [Xe].4f14.5d10.6s2 | 1S0 | (143.9) | 2.2 | L8672c99
89 | Actinium | Au | [Xe].4f14.5d10.6s | 2S<1/2> | (161.1) | 2.4 | L8672c99
89 | Actinium | Pt | [Xe].4f14.5d10 | 1S0 | (233.0) | 2.5 | L8672c99
89 | Actinium | Ir | [Xe].4f14.5d9 | 2D<5/2> | (255) | 3 | L8672c99
89 | Actinium | Os | [Xe].4f14.5d8 | 3F<4> | (279) | 3 | L8672c99
89 | Actinium | Re | [Xe].4f14.5d7 | 4F<9/2> | (305) | 3 | L8672c99
89 | Actinium | W | [Xe].4f14.5d6 | 5D<4> | (330) | 3 | L8672c99
89 | Actinium | Ta | [Xe].4f14.5d5 | 6S<5/2> | (355) | 3 | L8672c99
89 | Actinium | Hf | [Xe].4f14.5d4 | 5D0 | (390) | 3 | L8672c99
89 | Actinium | Lu | [Xe].4f14.5d3 | 4F<3/2> | (416) | 3 | L8672c99
89 | Actinium | Yb | [Xe].4f14.5d2 | 3F<2> | (444) | 4 | L8672c99
89 | Actinium | Tm | [Xe].4f14.5d | 2D<3/2> | (470) | 4 | L8672c99
89 | Actinium | Er | [Xe].4f14 | 1S0 | (610) | 30 | L582
89 | Actinium | Ho | [Cd].4f14.5p5 | 2P*<3/2> | (640) | 30 | L582
89 | Actinium | Dy | [Cd].4f14.5p4 | 3P<2> | (670) | 30 | L582
89 | Actinium | Tb | [Cd].4f14.5p3 | 2P*<3/2> | (710) | 40 | L582
89 | Actinium | Gd | [Cd].4f14.5p2 | 3P0 | (780) | 40 | L582
89 | Actinium | Eu | [Cd].4f14.5p | 2P*<1/2> | (820) | 40 | L582
89 | Actinium | Sm | [Cd].4f14 | 1S0 | (920) | 50 | L582
89 | Actinium | Pm | [Kr].4d10.4f14.5s | 2S<1/2> | (950) | 50 | L582
89 | Actinium | Nd | [Kr].4d10.4f14 | 1S0 | (1030) | 50 | L582
89 | Actinium | Pr | [Kr].4d10.4f13 | 2F*<7/2> | (1100) | 50 | L582
89 | Actinium | Ce | [Kr].4d10.4f12 | | (1170) | 60 | L582
89 | Actinium | La | [Kr].4d10.4f11 | 4I*<15/2> | (1240) | 60 | L582
89 | Actinium | Ba | [Kr].4d10.4f10 | 5I<8> | (1310) | 70 | L582
89 | Actinium | Cs | [Kr].4d10.4f9 | 6H*<15/2> | (1380) | 70 | L582
89 | Actinium | Xe | [Kr].4d10.4f8 | 7F<6> | (1460) | 70 | L582
89 | Actinium | I | [Kr].4d10.4f7 | 8S*<7/2> | (1530) | 80 | L582
89 | Actinium | Te | [Kr].4d10.4f6 | 7F0 | (1610) | 80 | L582
89 | Actinium | Sb | [Kr].4d10.4f5 | 6H*<5/2> | (1680) | 80 | L582
89 | Actinium | Sn | [Kr].4d10.4f4 | 5I<4> | (1750) | 90 | L582
89 | Actinium | In | [Kr].4d10.4f3 | 4I*<9/2> | (1820) | 90 | L582
89 | Actinium | Cd | [Kr].4d10.4f2 | 3H<4> | (1900) | 100 | L582
89 | Actinium | Ag | [Kr].4d10.4f | 2F*<5/2> | (1970) | 100 | L582
89 | Actinium | Pd | [Kr].4d10 | 1S0 | (2298) | 4 | L8672c99
89 | Actinium | Rh | [Kr].4d9 | 2D<5/2> | (2362) | 4 | L8672c99
89 | Actinium | Ru | [Kr].4d8 | 3F<4> | (2430) | 4 | L8672c99
89 | Actinium | Tc | [Kr].4d7 | 4F<9/2> | (2503) | 4 | L8672c99
89 | Actinium | Mo | [Kr].4d6 | 5D<4> | (2572) | 4 | L8672c99
89 | Actinium | Nb | [Kr].4d5 | <5/2> | (2639) | 4 | L8672c99
89 | Actinium | Zr | [Kr].4d4 | 5D0 | (2762) | 4 | L8672c99
89 | Actinium | Y | [Kr].4d3 | 4F<3/2> | (2833) | 4 | L8672c99
89 | Actinium | Sr | [Kr].4d2 | 3F<2> | (2908) | 4 | L8672c99
89 | Actinium | Rb | [Kr].4d | 2D<3/2> | (2980) | 4 | L8672c99
89 | Actinium | Kr | [Ar].3d10.4s2.4p6 | 1S0 | (3264) | 5 | L8672c99
89 | Actinium | Br | [Ar].3d10.4s2.4p5 | 2P*<3/2> | (3334) | 5 | L8672c99
89 | Actinium | Se | [Ar].3d10.4s2.4p4 | 3P<2> | (3409) | 5 | L8672c99
89 | Actinium | As | [Ar].3d10.4s2.4p3 | *<3/2> | (3479) | 5 | L8672c99
89 | Actinium | Ge | [Ar].3d10.4s2.4p2 | 3P0 | (3811) | 6 | L8672c99
89 | Actinium | Ga | [Ar].3d10.4s2.4p | 2P*<1/2> | (3893) | 6 | L8672c99
89 | Actinium | Zn | [Ar].3d10.4s2 | 1S0 | (4093) | 7 | L8672c99
89 | Actinium | Cu | [Ar].3d10.4s | 2S<1/2> | [4175] | 4 | L10278
89 | Actinium | Ni | [Ar].3d10 | 1S0 | (6767) | 12 | L8672c99
89 | Actinium | Co | [Ar].3d9 | 2D<5/2> | (6923) | 15 | L8672c99
89 | Actinium | Fe | [Ar].3d8 | 3F<4> | (7088) | 19 | L8672c99
89 | Actinium | Mn | [Ar].3d7 | 4F<9/2> | (7265) | 24 | L8672c99
89 | Actinium | Cr | [Ar].3d6 | <4> | (7430) | 30 | L8672c99
89 | Actinium | V | [Ar].3d5 | <5/2> | (7600) | 40 | L8672c99
89 | Actinium | Ti | [Ar].3d4 | 5D0 | (7950) | 40 | L8672c99
89 | Actinium | Sc | [Ar].3d3 | 4F<3/2> | (8120) | 50 | L8672c99
89 | Actinium | Ca | [Ar].3d2 | 3F<2> | (8310) | 50 | L8672c99
89 | Actinium | K | [Ar].3d | 2D<3/2> | (8480) | 60 | L8672c99
89 | Actinium | Ar | [Ne].3s2.3p6 | 1S0 | (8970) | 60 | L8672c99
89 | Actinium | Cl | [Ne].3s2.3p5 | 2P*<3/2> | (9120) | 70 | L8672c99
89 | Actinium | S | [Ne].3s2.3p4 | 3P<2> | (9290) | 90 | L8672c99
89 | Actinium | P | [Ne].3s2.3p3 | 2P*<3/2> | (9440) | 90 | L8672c99
89 | Actinium | Si | [Ne].3s2.3p2 | 3P0 | (10480) | 100 | L8672c99
89 | Actinium | Al | [Ne].3s2.3p | 2P*<1/2> | (10660) | 110 | L8672c99
89 | Actinium | Mg | [Ne].3s2 | 1S0 | (11030) | 120 | L8672c99
89 | Actinium | Na | [Ne].3s | 2S<1/2> | (11200) | 120 | L8672c99
89 | Actinium | Ne | 1s2.2s2.2p6 | 1S0 | (23480) | 140 | L8672c99
89 | Actinium | F | 1s2.2s2.2p5 | 2P*<3/2> | (23890) | 150 | L8672c99
89 | Actinium | O | 1s2.2s2.2p4 | 3P<2> | (24340) | 160 | L8672c99
89 | Actinium | N | 1s2.2s2.2p3 | (0,3/2)*<3/2> | (24760) | 170 | L8672c99
89 | Actinium | C | 1s2.2s2.2p2 | 3P0 | (28610) | 190 | L8672c99
89 | Actinium | B | 1s2.2s2.2p | 2P*<1/2> | (29160) | 200 | L8672c99
89 | Actinium | Be | 1s2.2s2 | 1S0 | (29850) | 220 | L8672c99
89 | Actinium | Li | 1s2.2s | 2S<1/2> | (30293.1) | 0.5 | L16264c99
89 | Actinium | He | 1s2 | 1S0 | (119945.7) | 0.6 | L21139
89 | Actinium | H | 1s | 2S<1/2> | (122063.1) | 2.2 | 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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