NIST Atomic Spectra Database Ionization Energies Data
Am (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 (eV) | References --------|-----------|-------------|--------------------|-----------------|--------------------------------------|----------------------|----------- 95 | Americium | Am | [Rn].5f7.7s2 | 8S*<7/2> | 5.97381 | 0.00025 | L15992 95 | Americium | Pu | [Rn].5f7.7s | 9S*<4> | [11.7] | 0.4 | L13741c99 95 | Americium | Np | [Rn].5f7 | 8S*<7/2> | [21.7] | 0.4 | L13741c99 95 | Americium | U | [Rn].5f6 | 7F0 | [36.8] | 0.4 | L13741c99 95 | Americium | Pa | [Rn].5f5 | 6H*<5/2> | (50.0) | 1.9 | L8672c99 95 | Americium | Th | [Rn].5f4 | 5I<4> | (67.9) | 2.0 | L8672c99 95 | Americium | Ac | [Rn].5f3 | 4I*<9/2> | (95) | 5 | L582 95 | Americium | Ra | [Hg].5f3.6p5 | | (110) | 6 | L582 95 | Americium | Fr | [Hg].5f3.6p4 | * | (125) | 6 | L582 95 | Americium | Rn | [Hg].5f3.6p3 | | (141) | 7 | L582 95 | Americium | At | [Hg].5f3.6p2 | * | (163) | 8 | L582 95 | Americium | Po | [Hg].5f2.6p2 | | (184) | 9 | L582 95 | Americium | Bi | [Hg].5f.6p2 | * | (206) | 10 | L582 95 | Americium | Pb | [Hg].6p2 | 3P0 | (225) | 3 | L8672c99 95 | Americium | Tl | [Hg].6p | 2P*<1/2> | (242) | 3 | L8672c99 95 | Americium | Hg | [Xe].4f14.5d10.6s2 | 1S0 | (284) | 3 | L8672c99 95 | Americium | Au | [Xe].4f14.5d10.6s | 2S<1/2> | (305) | 3 | L8672c99 95 | Americium | Pt | [Xe].4f14.5d10 | 1S0 | (424) | 3 | L8672c99 95 | Americium | Ir | [Xe].4f14.5d9 | 2D<5/2> | (451) | 3 | L8672c99 95 | Americium | Os | [Xe].4f14.5d8 | 3F<4> | (481) | 4 | L8672c99 95 | Americium | Re | [Xe].4f14.5d7 | 4F<9/2> | (511) | 4 | L8672c99 95 | Americium | W | [Xe].4f14.5d6 | 5D<4> | (541) | 4 | L8672c99 95 | Americium | Ta | [Xe].4f14.5d5 | 6S<5/2> | (571) | 4 | L8672c99 95 | Americium | Hf | [Xe].4f14.5d4 | 5D0 | (616) | 4 | L8672c99 95 | Americium | Lu | [Xe].4f14.5d3 | 4F<3/2> | (646) | 4 | L8672c99 95 | Americium | Yb | [Xe].4f14.5d2 | 3F<2> | (680) | 4 | L8672c99 95 | Americium | Tm | [Xe].4f14.5d | 2D<3/2> | (711) | 4 | L8672c99 95 | Americium | Er | [Xe].4f14 | 1S0 | (870) | 40 | L582 95 | Americium | Ho | [Cd].4f14.5p5 | 2P*<3/2> | (900) | 50 | L582 95 | Americium | Dy | [Cd].4f14.5p4 | 3P<2> | (940) | 50 | L582 95 | Americium | Tb | [Cd].4f14.5p3 | 2P*<3/2> | (980) | 50 | L582 95 | Americium | Gd | [Cd].4f14.5p2 | 3P0 | (1090) | 50 | L582 95 | Americium | Eu | [Cd].4f14.5p | 2P*<1/2> | (1130) | 60 | L582 95 | Americium | Sm | [Cd].4f14 | 1S0 | (1240) | 60 | L582 95 | Americium | Pm | [Kr].4d10.4f14.5s | 2S<1/2> | (1280) | 60 | L582 95 | Americium | Nd | [Kr].4d10.4f14 | 1S0 | (1410) | 70 | L582 95 | Americium | Pr | [Kr].4d10.4f13 | 2F*<7/2> | (1490) | 70 | L582 95 | Americium | Ce | [Kr].4d10.4f12 | | (1570) | 80 | L582 95 | Americium | La | [Kr].4d10.4f11 | 4I*<15/2> | (1650) | 90 | L582 95 | Americium | Ba | [Kr].4d10.4f10 | 5I<8> | (1730) | 90 | L582 95 | Americium | Cs | [Kr].4d10.4f9 | 6H*<15/2> | (1820) | 90 | L582 95 | Americium | Xe | [Kr].4d10.4f8 | 7F<6> | (1900) | 90 | L582 95 | Americium | I | [Kr].4d10.4f7 | 8S*<7/2> | (1980) | 100 | L582 95 | Americium | Te | [Kr].4d10.4f6 | 7F0 | (2070) | 100 | L582 95 | Americium | Sb | [Kr].4d10.4f5 | 6H*<5/2> | (2160) | 110 | L582 95 | Americium | Sn | [Kr].4d10.4f4 | 5I<4> | (2240) | 110 | L582 95 | Americium | In | [Kr].4d10.4f3 | 4I*<9/2> | (2320) | 110 | L582 95 | Americium | Cd | [Kr].4d10.4f2 | 3H<4> | (2410) | 120 | L582 95 | Americium | Ag | [Kr].4d10.4f | 2F*<5/2> | (2480) | 120 | L582 95 | Americium | Pd | [Kr].4d10 | 1S0 | (2874) | 4 | L8672c99 95 | Americium | Rh | [Kr].4d9 | 2D<5/2> | (2946) | 4 | L8672c99 95 | Americium | Ru | [Kr].4d8 | 3F<4> | (3021) | 4 | L8672c99 95 | Americium | Tc | [Kr].4d7 | 4F<9/2> | (3101) | 4 | L8672c99 95 | Americium | Mo | [Kr].4d6 | 5D<4> | (3178) | 5 | L8672c99 95 | Americium | Nb | [Kr].4d5 | <5/2> | (3251) | 5 | L8672c99 95 | Americium | Zr | [Kr].4d4 | 5D0 | (3402) | 5 | L8672c99 95 | Americium | Y | [Kr].4d3 | 4F<3/2> | (3479) | 5 | L8672c99 95 | Americium | Sr | [Kr].4d2 | 3F<2> | (3563) | 6 | L8672c99 95 | Americium | Rb | [Kr].4d | 2D<3/2> | (3641) | 6 | L8672c99 95 | Americium | Kr | [Ar].3d10.4s2.4p6 | 1S0 | (3956) | 7 | L8672c99 95 | Americium | Br | [Ar].3d10.4s2.4p5 | 2P*<3/2> | (4033) | 10 | L8672c99 95 | Americium | Se | [Ar].3d10.4s2.4p4 | 3P<2> | (4115) | 12 | L8672c99 95 | Americium | As | [Ar].3d10.4s2.4p3 | *<3/2> | (4191) | 15 | L8672c99 95 | Americium | Ge | [Ar].3d10.4s2.4p2 | 3P0 | (4642) | 19 | L8672c99 95 | Americium | Ga | [Ar].3d10.4s2.4p | 2P*<1/2> | (4733) | 24 | L8672c99 95 | Americium | Zn | [Ar].3d10.4s2 | 1S0 | (4960) | 30 | L8672c99 95 | Americium | Cu | [Ar].3d10.4s | 2S<1/2> | (5050) | 40 | L8672c99 95 | Americium | Ni | [Ar].3d10 | 1S0 | (8040) | 40 | L8672c99 95 | Americium | Co | [Ar].3d9 | 2D<5/2> | (8210) | 50 | L8672c99 95 | Americium | Fe | [Ar].3d8 | 3F<4> | (8390) | 50 | L8672c99 95 | Americium | Mn | [Ar].3d7 | 4F<9/2> | (8590) | 60 | L8672c99 95 | Americium | Cr | [Ar].3d6 | <4> | (8770) | 60 | L8672c99 95 | Americium | V | [Ar].3d5 | <5/2> | (8950) | 70 | L8672c99 95 | Americium | Ti | [Ar].3d4 | 5D0 | (9380) | 90 | L8672c99 95 | Americium | Sc | [Ar].3d3 | 4F<3/2> | (9560) | 90 | L8672c99 95 | Americium | Ca | [Ar].3d2 | 3F<2> | (9770) | 100 | L8672c99 95 | Americium | K | [Ar].3d | 2D<3/2> | (9960) | 110 | L8672c99 95 | Americium | Ar | [Ne].3s2.3p6 | 1S0 | (10490) | 120 | L8672c99 95 | Americium | Cl | [Ne].3s2.3p5 | 2P*<3/2> | (10650) | 120 | L8672c99 95 | Americium | S | [Ne].3s2.3p4 | 3P<2> | (10830) | 140 | L8672c99 95 | Americium | P | [Ne].3s2.3p3 | 2P*<3/2> | (11000) | 150 | L8672c99 95 | Americium | Si | [Ne].3s2.3p2 | 3P0 | (12400) | 160 | L8672c99 95 | Americium | Al | [Ne].3s2.3p | 2P*<1/2> | (12600) | 170 | L8672c99 95 | Americium | Mg | [Ne].3s2 | 1S0 | (13000) | 190 | L8672c99 95 | Americium | Na | [Ne].3s | 2S<1/2> | (13190) | 200 | L8672c99 95 | Americium | Ne | 1s2.2s2.2p6 | 1S0 | (27110) | 220 | L8672c99 95 | Americium | F | 1s2.2s2.2p5 | 2P*<3/2> | (27550) | 240 | L8672c99 95 | Americium | O | 1s2.2s2.2p4 | 3P<2> | (28040) | 250 | L8672c99 95 | Americium | N | 1s2.2s2.2p3 | (0,3/2)*<3/2> | (28500) | 300 | L8672c99 95 | Americium | C | 1s2.2s2.2p2 | 3P0 | (33700) | 300 | L8672c99 95 | Americium | B | 1s2.2s2.2p | 2P*<1/2> | (34300) | 300 | L8672c99 95 | Americium | Be | 1s2.2s2 | 1S0 | (35100) | 300 | L8672c99 95 | Americium | Li | 1s2.2s | 2S<1/2> | (35549.4) | 0.7 | L16264c99 95 | Americium | He | 1s2 | 1S0 | (139769.5) | 0.7 | L12128 95 | Americium | H | 1s | 2S<1/2> | (142153.5) | 0.9 | 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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