# Ionization energies of the elements (data page)
## Numerical values

For each atom, the column marked 1 is the first ionization energy to ionize the neutral atom, the column marked 2 is the second ionization energy to remove a second electron from the +1 ion, the column marked 3 is the third ionization energy to remove a third electron from the +2 ion, and so on.
"use" and "WEL" give ionization energy in the unit kJ/mol; "CRC" gives atomic ionization energy in the unit eV.
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 1 H hydrogen |||||||||||||||||||||||||||||||
| use | 1312.0 |
| WEL | 1312.0 |
| CRC | 13.59844 |
| 2 He helium |||||||||||||||||||||||||||||||
| use | 2372.3 | 5250.5 |
| WEL | 2372.3 | 5250.5 |
| CRC | 24.58738 | 54.41776 |
| 3 Li lithium |||||||||||||||||||||||||||||||
| use | 520.2 | 7298.1 | 11815.0 |
| WEL | 520.2 | 7298.1 | 11815.0 |
| CRC | 5.39171 | 75.64009 | 122.45435 |
| 4 Be beryllium |||||||||||||||||||||||||||||||
| use | 899.5 | 1757.1 | 14848.7 | 21006.6 |
| WEL | 899.5 | 1757.1 | 14848.7 | 21006.6 |
| CRC | 9.32269 | 18.21115 | 153.89620 | 217.71858 |
| 5 B boron |||||||||||||||||||||||||||||||
| use | 800.6 | 2427.1 | 3659.7 | 25025.8 | 32826.7 |
| WEL | 800.6 | 2427.1 | 3659.7 | 25025.8 | 32826.7 |
| CRC | 8.29803 | 25.15484 | 37.93064 | 259.37521 | 340.22580 |
| 6 C carbon |||||||||||||||||||||||||||||||
| use | 1086.5 | 2352.6 | 4620.5 | 6222.7 | 37831 | 47277.0 |
| WEL | 1086.5 | 2352.6 | 4620.5 | 6222.7 | 37831 | 47277.0 |
| CRC | 11.26030 | 24.38332 | 47.8878 | 64.4939 | 392.087 | 489.99334 |
| 7 N nitrogen |||||||||||||||||||||||||||||||
| use | 1402.3 | 2856 | 4578.1 | 7475.0 | 9444.9 | 53266.6 | 64360 |
| WEL | 1402.3 | 2856 | 4578.1 | 7475.0 | 9444.9 | 53266.6 | 64360 |
| CRC | 14.53414 | 29.6013 | 47.44924 | 77.4735 | 97.8902 | 552.0718 | 667.046 |
| 8 O oxygen |||||||||||||||||||||||||||||||
| use | 1313.9 | 3388.3 | 5300.5 | 7469.2 | 10989.5 | 13326.5 | 71330 | 84078.0 |
| WEL | 1313.9 | 3388.3 | 5300.5 | 7469.2 | 10989.5 | 13326.5 | 71330 | 84078.0 |
| CRC | 13.61806 | 35.11730 | 54.9355 | 77.41353 | 113.8990 | 138.1197 | 739.29 | 871.4101 |
| 9 F fluorine |||||||||||||||||||||||||||||||
| use | 1681.0 | 3374.2 | 6050.4 | 8407.7 | 11022.7 | 15164.1 | 17868 | 92038.1 | 106434.3 |
| WEL | 1681.0 | 3374.2 | 6050.4 | 8407.7 | 11022.7 | 15164.1 | 17868 | 92038.1 | 106434.3 |
| CRC | 17.42282 | 34.97082 | 62.7084 | 87.1398 | 114.2428 | 157.1651 | 185.186 | 953.9112 | 1103.1176 |
| 10 Ne neon |||||||||||||||||||||||||||||||
| use | 2080.7 | 3952.3 | 6122 | 9371 | 12177 | 15238 | 19999.0 | 23069.5 | 115379.5 | 131432 |
| WEL | 2080.7 | 3952.3 | 6122 | 9371 | 12177 | 15238 | 19999.0 | 23069.5 | 115379.5 | 131432 |
| CRC | 21.5646 | 40.96328 | 63.45 | 97.12 | 126.21 | 157.93 | 207.2759 | 239.0989 | 1195.8286 | 1362.1995 |
| 11 Na sodium |||||||||||||||||||||||||||||||
| use | 495.8 | 4562 | 6910.3 | 9543 | 13354 | 16613 | 20117 | 25496 | 28932 | 141362 | 159076 |
| WEL | 495.8 | 4562 | 6910.3 | 9543 | 13354 | 16613 | 20117 | 25496 | 28932 | 141362 |
| CRC | 5.13908 | 47.2864 | 71.6200 | 98.91 | 138.40 | 172.18 | 208.50 | 264.25 | 299.864 | 1465.121 | 1648.702 |
| 12 Mg magnesium |||||||||||||||||||||||||||||||
| use | 737.7 | 1450.7 | 7732.7 | 10542.5 | 13630 | 18020 | 21711 | 25661 | 31653 | 35458 | 169988 | 189368 |
| WEL | 737.7 | 1450.7 | 7732.7 | 10542.5 | 13630 | 18020 | 21711 | 25661 | 31653 | 35458 |
| CRC | 7.64624 | 15.03528 | 80.1437 | 109.2655 | 141.27 | 186.76 | 225.02 | 265.96 | 328.06 | 367.50 | 1761.805 | 1962.6650 |
| 13 Al aluminium |||||||||||||||||||||||||||||||
| use | 577.5 | 1816.7 | 2744.8 | 11577 | 14842 | 18379 | 23326 | 27465 | 31853 | 38473 | 42647 | 201266 | 222316 |
| WEL | 577.5 | 1816.7 | 2744.8 | 11577 | 14842 | 18379 | 23326 | 27465 | 31853 | 38473 |
| CRC | 5.98577 | 18.82856 | 28.44765 | 119.992 | 153.825 | 190.49 | 241.76 | 284.66 | 330.13 | 398.75 | 442.00 | 2085.98 | 2304.1410 |
| 14 Si silicon |||||||||||||||||||||||||||||||
| use | 786.5 | 1577.1 | 3231.6 | 4355.5 | 16091 | 19805 | 23780 | 29287 | 33878 | 38726 | 45962 | 50502 | 235196 | 257923 |
| WEL | 786.5 | 1577.1 | 3231.6 | 4355.5 | 16091 | 19805 | 23780 | 29287 | 33878 | 38726 |
| CRC | 8.15169 | 16.34585 | 33.49302 | 45.14181 | 166.767 | 205.27 | 246.5 | 303.54 | 351.12 | 401.37 | 476.36 | 523.42 | 2437.63 | 2673.182 |
| 15 P phosphorus |||||||||||||||||||||||||||||||
| use | 1011.8 | 1907 | 2914.1 | 4963.6 | 6273.9 | 21267 | 25431 | 29872 | 35905 | 40950 | 46261 | 54110 | 59024 | 271791 | 296195 |
| WEL | 1011.8 | 1907 | 2914.1 | 4963.6 | 6273.9 | 21267 | 25431 | 29872 | 35905 | 40950 |
| CRC | 10.48669 | 19.7694 | 30.2027 | 51.4439 | 65.0251 | 220.421 | 263.57 | 309.60 | 372.13 | 424.4 | 479.46 | 560.8 | 611.74 | 2816.91 | 3069.842 |
| 16 S sulfur |||||||||||||||||||||||||||||||
| use | 999.6 | 2252 | 3357 | 4556 | 7004.3 | 8495.8 | 27107 | 31719 | 36621 | 43177 | 48710 | 54460 | 62930 | 68216 | 311048 | 337138 |
| WEL | 999.6 | 2252 | 3357 | 4556 | 7004.3 | 8495.8 | 27107 | 31719 | 36621 | 43177 |
| CRC | 10.36001 | 23.3379 | 34.79 | 47.222 | 72.5945 | 88.0530 | 280.948 | 328.75 | 379.55 | 447.5 | 504.8 | 564.44 | 652.2 | 707.01 | 3223.78 | 3494.1892 |
| 17 Cl chlorine |||||||||||||||||||||||||||||||
| use | 1251.2 | 2298 | 3822 | 5158.6 | 6542 | 9362 | 11018 | 33604 | 38600 | 43961 | 51068 | 57119 | 63363 | 72341 | 78095 | 352994 | 380760 |
| WEL | 1251.2 | 2298 | 3822 | 5158.6 | 6542 | 9362 | 11018 | 33604 | 38600 | 43961 |
| CRC | 12.96764 | 23.814 | 39.61 | 53.4652 | 67.8 | 97.03 | 114.1958 | 348.28 | 400.06 | 455.63 | 529.28 | 591.99 | 656.71 | 749.76 | 809.40 | 3658.521 | 3946.2960 |
| 18 Ar argon |||||||||||||||||||||||||||||||
| use | 1520.6 | 2665.8 | 3931 | 5771 | 7238 | 8781 | 11995 | 13842 | 40760 | 46186 | 52002 | 59653 | 66199 | 72918 | 82473 | 88576 | 397605 | 427066 |
| WEL | 1520.6 | 2665.8 | 3931 | 5771 | 7238 | 8781 | 11995 | 13842 | 40760 | 46186 |
| CRC | 15.75962 | 27.62967 | 40.74 | 59.81 | 75.02 | 91.009 | 124.323 | 143.460 | 422.45 | 478.69 | 538.96 | 618.26 | 686.10 | 755.74 | 854.77 | 918.03 | 4120.8857 | 4426.2296 |
| 19 K potassium |||||||||||||||||||||||||||||||
| use | 418.8 | 3052 | 4420 | 5877 | 7975 | 9590 | 11343 | 14944 | 16963.7 | 48610 | 54490 | 60730 | 68950 | 75900 | 83080 | 93400 | 99710 | 444880 | 476063 |
| WEL | 418.8 | 3052 | 4420 | 5877 | 7975 | 9590 | 11343 | 14944 | 16963.7 | 48610 |
| CRC | 4.34066 | 31.63 | 45.806 | 60.91 | 82.66 | 99.4 | 117.56 | 154.88 | 175.8174 | 503.8 | 564.7 | 629.4 | 714.6 | 786.6 | 861.1 | 968 | 1033.4 | 4610.8 | 4934.046 |
| 20 Ca calcium |||||||||||||||||||||||||||||||
| use | 589.8 | 1145.4 | 4912.4 | 6491 | 8153 | 10496 | 12270 | 14206 | 18191 | 20385 | 57110 | 63410 | 70110 | 78890 | 86310 | 94000 | 104900 | 111711 | 494850 | 527762 |
| WEL | 589.8 | 1145.4 | 4912.4 | 6491 | 8153 | 10496 | 12270 | 14206 | 18191 | 20385 | 57110 |
| CRC | 6.11316 | 11.87172 | 50.9131 | 67.27 | 84.50 | 108.78 | 127.2 | 147.24 | 188.54 | 211.275 | 591.9 | 657.2 | 726.6 | 817.6 | 894.5 | 974 | 1087 | 1157.8 | 5128.8 | 5469.864 |
| 21 Sc scandium |||||||||||||||||||||||||||||||
| use | 633.1 | 1235.0 | 2388.6 | 7090.6 | 8843 | 10679 | 13310 | 15250 | 17370 | 21726 | 24102 | 66320 | 73010 | 80160 | 89490 | 97400 | 105600 | 117000 | 124270 | 547530 | 582163 |
| WEL | 633.1 | 1235.0 | 2388.6 | 7090.6 | 8843 | 10679 | 13310 | 15250 | 17370 | 21726 | 24102 | 66320 | 73010 | 80160 | 89490 | 97400 | 105600 | 117000 | 124270 | 547530 | 582163 |
| CRC | 6.5615 | 12.79967 | 24.75666 | 73.4894 | 91.65 | 110.68 | 138.0 | 158.1 | 180.03 | 225.18 | 249.798 | 687.36 | 756.7 | 830.8 | 927.5 | 1009 | 1094 | 1213 | 1287.97 | 5674.8 | 6033.712 |
| 22 Ti titanium |||||||||||||||||||||||||||||||
| use | 658.8 | 1309.8 | 2652.5 | 4174.6 | 9581 | 11533 | 13590 | 16440 | 18530 | 20833 | 25575 | 28125 | 76015 | 83280 | 90880 | 100700 | 109100 | 117800 | 129900 | 137530 | 602930 | 639294 |
| WEL | 658.8 | 1309.8 | 2652.5 | 4174.6 | 9581 | 11533 | 13590 | 16440 | 18530 | 20833 | 25575 | 28125 | 76015 | 83280 | 90880 | 100700 | 109100 | 117800 | 129900 | 137530 | 602930 |
| CRC | 6.8281 | 13.5755 | 27.4917 | 43.2672 | 99.30 | 119.53 | 140.8 | 170.4 | 192.1 | 215.92 | 265.07 | 291.500 | 787.84 | 863.1 | 941.9 | 1044 | 1131 | 1221 | 1346 | 1425.4 | 6249.0 | 6625.82 |
| 23 V vanadium |||||||||||||||||||||||||||||||
| use | 650.9 | 1414 | 2830 | 4507 | 6298.7 | 12363 | 14530 | 16730 | 19860 | 22240 | 24670 | 29730 | 32446 | 86450 | 94170 | 102300 | 112700 | 121600 | 130700 | 143400 | 151440 | 661050 | 699144 |
| WEL | 650.9 | 1414 | 2830 | 4507 | 6298.7 | 12363 | 14530 | 16730 | 19860 | 22240 | 24670 | 29730 | 32446 | 86450 | 94170 | 102300 | 112700 | 121600 | 130700 | 143400 | 151440 |
| CRC | 6.7462 | 14.66 | 29.311 | 46.709 | 65.2817 | 128.13 | 150.6 | 173.4 | 205.8 | 230.5 | 255.7 | 308.1 | 336.277 | 896.0 | 976 | 1060 | 1168 | 1260 | 1355 | 1486 | 1569.6 | 6851.3 | 7246.12 |
| 24 Cr chromium |||||||||||||||||||||||||||||||
| use | 652.9 | 1590.6 | 2987 | 4743 | 6702 | 8744.9 | 15455 | 17820 | 20190 | 23580 | 26130 | 28750 | 34230 | 37066 | 97510 | 105800 | 114300 | 125300 | 134700 | 144300 | 157700 | 166090 | 721870 | 761733 |
| WEL | 652.9 | 1590.6 | 2987 | 4743 | 6702 | 8744.9 | 15455 | 17820 | 20190 | 23580 | 26130 | 28750 | 34230 | 37066 | 97510 | 105800 | 114300 | 125300 | 134700 | 144300 | 157700 |
| CRC | 6.7665 | 16.4857 | 30.96 | 49.16 | 69.46 | 90.6349 | 160.18 | 184.7 | 209.3 | 244.4 | 270.8 | 298.0 | 354.8 | 384.168 | 1010.6 | 1097 | 1185 | 1299 | 1396 | 1496 | 1634 | 1721.4 | 7481.7 | 7894.81 |
| 25 Mn manganese |||||||||||||||||||||||||||||||
| use | 717.3 | 1509.0 | 3248 | 4940 | 6990 | 9220 | 11500 | 18770 | 21400 | 23960 | 27590 | 30330 | 33150 | 38880 | 41987 | 109480 | 118100 | 127100 | 138600 | 148500 | 158600 | 172500 | 181380 | 785450 | 827067 |
| WEL | 717.3 | 1509.0 | 3248 | 4940 | 6990 | 9220 | 11500 | 18770 | 21400 | 23960 | 27590 | 30330 | 33150 | 38880 | 41987 | 109480 | 118100 | 127100 | 138600 | 148500 | 158600 |
| CRC | 7.43402 | 15.63999 | 33.668 | 51.2 | 72.4 | 95.6 | 119.203 | 194.5 | 221.8 | 248.3 | 286.0 | 314.4 | 343.6 | 403.0 | 435.163 | 1134.7 | 1224 | 1317 | 1437 | 1539 | 1644 | 1788 | 1879.9 | 8140.6 | 8571.94 |
| 26 Fe iron |||||||||||||||||||||||||||||||
| use | 762.5 | 1561.9 | 2957 | 5290 | 7240 | 9560 | 12060 | 14580 | 22540 | 25290 | 28000 | 31920 | 34830 | 37840 | 44100 | 47206 | 122200 | 131000 | 140500 | 152600 | 163000 | 173600 | 188100 | 195200 | 851800 | 895161 |
| WEL | 762.5 | 1561.9 | 2957 | 5290 | 7240 | 9560 | 12060 | 14580 | 22540 | 25290 | 28000 | 31920 | 34830 | 37840 | 44100 | 47206 | 122200 | 131000 | 140500 | 152600 | 163000 |
| CRC | 7.9024 | 16.1878 | 30.652 | 54.8 | 75.0 | 99.1 | 124.98 | 151.06 | 233.6 | 262.1 | 290.2 | 330.8 | 361.0 | 392.2 | 457 | 489.256 | 1266 | 1358 | 1456 | 1582 | 1689 | 1799 | 1950 | 2023 | 8828 | 9277.69 |
| 27 Co cobalt |||||||||||||||||||||||||||||||
| use | 760.4 | 1648 | 3232 | 4950 | 7670 | 9840 | 12440 | 15230 | 17959 | 26570 | 29400 | 32400 | 36600 | 39700 | 42800 | 49396 | 52737 | 134810 | 145170 | 154700 | 167400 | 178100 | 189300 | 204500 | 214100 | 920870 | 966023 |
| WEL | 760.4 | 1648 | 3232 | 4950 | 7670 | 9840 | 12440 | 15230 | 17959 | 26570 | 29400 | 32400 | 36600 | 39700 | 42800 | 49396 | 52737 | 134810 | 145170 | 154700 | 167400 |
| CRC | 7.8810 | 17.083 | 33.50 | 51.3 | 79.5 | 102.0 | 128.9 | 157.8 | 186.13 | 275.4 | 305 | 336 | 379 | 411 | 444 | 511.96 | 546.58 | 1397.2 | 1504.6 | 1603 | 1735 | 1846 | 1962 | 2119 | 2219.0 | 9544.1 | 10012.12 |
| 28 Ni nickel |||||||||||||||||||||||||||||||
| use | 737.1 | 1753.0 | 3395 | 5300 | 7339 | 10400 | 12800 | 15600 | 18600 | 21670 | 30970 | 34000 | 37100 | 41500 | 44800 | 48100 | 55101 | 58570 | 148700 | 159000 | 169400 | 182700 | 194000 | 205600 | 221400 | 231490 | 992718 | 1039668 |
| WEL | 737.1 | 1753.0 | 3395 | 5300 | 7339 | 10400 | 12800 | 15600 | 18600 | 21670 | 30970 | 34000 | 37100 | 41500 | 44800 | 48100 | 55101 | 58570 | 148700 | 159000 | 169400 |
| CRC | 7.6398 | 18.16884 | 35.19 | 54.9 | 76.06 | 108 | 133 | 162 | 193 | 224.6 | 321.0 | 352 | 384 | 430 | 464 | 499 | 571.08 | 607.06 | 1541 | 1648 | 1756 | 1894 | 2011 | 2131 | 2295 | 2399.2 | 10288.8 | 10775.40 |
| 29 Cu copper |||||||||||||||||||||||||||||||
| use | 745.5 | 1957.9 | 3555 | 5536 | 7700 | 9900 | 13400 | 16000 | 19200 | 22400 | 25600 | 35600 | 38700 | 42000 | 46700 | 50200 | 53700 | 61100 | 64702 | 163700 | 174100 | 184900 | 198800 | 210500 | 222700 | 239100 | 249660 | 1067358 | 1116105 |
| WEL | 745.5 | 1957.9 | 3555 | 5536 | 7700 | 9900 | 13400 | 16000 | 19200 | 22400 | 25600 | 35600 | 38700 | 42000 | 46700 | 50200 | 53700 | 61100 | 64702 | 163700 | 174100 |
| CRC | 7.72638 | 20.29240 | 36.841 | 57.38 | 79.8 | 103 | 139 | 166 | 199 | 232 | 265.3 | 369 | 401 | 435 | 484 | 520 | 557 | 633 | 670.588 | 1697 | 1804 | 1916 | 2060 | 2182 | 2308 | 2478 | 2587.5 | 11062.38 | 11567.617 |
| 30 Zn zinc |||||||||||||||||||||||||||||||
| use | 906.4 | 1733.3 | 3833 | 5731 | 7970 | 10400 | 12900 | 16800 | 19600 | 23000 | 26400 | 29990 | 40490 | 43800 | 47300 | 52300 | 55900 | 59700 | 67300 | 71200 | 179100 |
| WEL | 906.4 | 1733.3 | 3833 | 5731 | 7970 | 10400 | 12900 | 16800 | 19600 | 23000 | 26400 | 29990 | 40490 | 43800 | 47300 | 52300 | 55900 | 59700 | 67300 | 71200 | 179100 |
| CRC | 9.3942 | 17.96440 | 39.723 | 59.4 | 82.6 | 108 | 134 | 174 | 203 | 238 | 274 | 310.8 | 419.7 | 454 | 490 | 542 | 579 | 619 | 698 | 738 | 1856 |
| 31 Ga gallium |||||||||||||||||||||||||||||||
| use | 578.8 | 1979.3 | 2963 | 6180 |
| WEL | 578.8 | 1979.3 | 2963 | 6180 |
| CRC | 5.99930 | 20.5142 | 30.71 | 64 |
| 32 Ge germanium |||||||||||||||||||||||||||||||
| use | 762 | 1537.5 | 3302.1 | 4411 | 9020 |
| WEL | 762 | 1537.5 | 3302.1 | 4411 | 9020 |
| CRC | 7.8994 | 15.93462 | 34.2241 | 45.7131 | 93.5 |
| 33 As arsenic |||||||||||||||||||||||||||||||
| use | 947.0 | 1798 | 2735 | 4837 | 6043 | 12310 |
| WEL | 947.0 | 1798 | 2735 | 4837 | 6043 | 12310 |
| CRC | 9.7886 | 18.633 | 28.351 | 50.13 | 62.63 | 127.6 |
| 34 Se selenium |||||||||||||||||||||||||||||||
| use | 941.0 | 2045 | 2973.7 | 4144 | 6590 | 7880 | 14990 |
| WEL | 941.0 | 2045 | 2973.7 | 4144 | 6590 | 7880 | 14990 |
| CRC | 9.75238 | 21.19 | 30.8204 | 42.9450 | 68.3 | 81.7 | 155.4 |
| 35 Br bromine |||||||||||||||||||||||||||||||
| use | 1139.9 | 2103 | 3470 | 4560 | 5760 | 8550 | 9940 | 18600 |
| WEL | 1139.9 | 2103 | 3470 | 4560 | 5760 | 8550 | 9940 | 18600 |
| CRC | 11.81381 | 21.8 | 36 | 47.3 | 59.7 | 88.6 | 103.0 | 192.8 |
| 36 Kr krypton |||||||||||||||||||||||||||||||
| use | 1350.8 | 2350.4 | 3565 | 5070 | 6240 | 7570 | 10710 | 12138 | 22274 | 25880 | 29700 | 33800 | 37700 | 43100 | 47500 | 52200 | 57100 | 61800 | 75800 | 80400 | 85300 | 90400 | 96300 | 101400 | 111100 | 116290 | 282500 | 296200 | 311400 | 326200 |
| WEL | 1350.8 | 2350.4 | 3565 | 5070 | 6240 | 7570 | 10710 | 12138 | 22274 | 25880 | 29700 | 33800 | 37700 | 43100 | 47500 | 52200 | 57100 | 61800 | 75800 | 80400 | 85300 |
| CRC | 13.99961 | 24.35985 | 36.950 | 52.5 | 64.7 | 78.5 | 111.0 | 125.802 | 230.85 | 268.2 | 308 | 350 | 391 | 447 | 492 | 541 | 592 | 641 | 786 | 833 | 884 | 937 | 998 | 1051 | 1151 | 1205.3 | 2928 | 3070 | 3227 | 3381 |
| 37 Rb rubidium |||||||||||||||||||||||||||||||
| use | 403.0 | 2633 | 3860 | 5080 | 6850 | 8140 | 9570 | 13120 | 14500 | 26740 |
| WEL | 403.0 | 2633 | 3860 | 5080 | 6850 | 8140 | 9570 | 13120 | 14500 | 26740 |
| CRC | 4.17713 | 27.285 | 40 | 52.6 | 71.0 | 84.4 | 99.2 | 136 | 150 | 277.1 |
| 38 Sr strontium |||||||||||||||||||||||||||||||
| use | 549.5 | 1064.2 | 4138 | 5500 | 6910 | 8760 | 10230 | 11800 | 15600 | 17100 | 31270 |
| WEL | 549.5 | 1064.2 | 4138 | 5500 | 6910 | 8760 | 10230 | 11800 | 15600 | 17100 |
| CRC | 5.6949 | 11.03013 | 42.89 | 57 | 71.6 | 90.8 | 106 | 122.3 | 162 | 177 | 324.1 |
| 39 Y yttrium |||||||||||||||||||||||||||||||
| use | 600 | 1180 | 1980 | 5847 | 7430 | 8970 | 11190 | 12450 | 14110 | 18400 | 19900 | 36090 |
| WEL | 600 | 1180 | 1980 | 5847 | 7430 | 8970 | 11190 | 12450 | 14110 | 18400 |
| CRC | 6.2171 | 12.24 | 20.52 | 60.597 | 77.0 | 93.0 | 116 | 129 | 146.2 | 191 | 206 | 374.0 |
| 40 Zr zirconium |||||||||||||||||||||||||||||||
| use | 640.1 | 1270 | 2218 | 3313 | 7752 | 9500 |
| WEL | 640.1 | 1270 | 2218 | 3313 | 7752 | 9500 |
| CRC | 6.63390 | 13.13 | 22.99 | 34.34 | 80.348 |
| 41 Nb niobium |||||||||||||||||||||||||||||||
| use | 652.1 | 1380 | 2416 | 3700 | 4877 | 9847 | 12100 |
| WEL | 652.1 | 1380 | 2416 | 3700 | 4877 | 9847 | 12100 |
| CRC | 6.75885 | 14.32 | 25.04 | 38.3 | 50.55 | 102.057 | 125 |
| 42 Mo molybdenum |||||||||||||||||||||||||||||||
| use | 684.3 | 1560 | 2618 | 4480 | 5257 | 6640.8 | 12125 | 13860 | 15835 | 17980 | 20190 | 22219 | 26930 | 29196 | 52490 | 55000 | 61400 | 67700 | 74000 | 80400 | 87000 | 93400 | 98420 | 104400 | 121900 | 127700 | 133800 | 139800 | 148100 | 154500 |
| WEL | 684.3 | 1560 | 2618 | 4480 | 5257 | 6640.8 | 12125 | 13860 | 15835 | 17980 | 20190 | 22219 | 26930 | 29196 | 52490 | 55000 | 61400 | 67700 | 74000 | 80400 | 87000 |
| CRC | 7.09243 | 16.16 | 27.13 | 46.4 | 54.49 | 68.8276 | 125.664 | 143.6 | 164.12 | 186.4 | 209.3 | 230.28 | 279.1 | 302.60 | 544.0 | 570 | 636 | 702 | 767 | 833 | 902 | 968 | 1020 | 1082 | 1263 | 1323 | 1387 | 1449 | 1535 | 1601 |
| 43 Tc technetium |||||||||||||||||||||||||||||||
| use | 686.9 | 1470 | 2850 |
| WEL | 702 | 1470 | 2850 |
| CRC | 7.28 | 15.26 | 29.54 |
| Mattolat et al. | 7.119380(32) eV |
| 44 Ru ruthenium |||||||||||||||||||||||||||||||
| use | 710.2 | 1620 | 2747 |
| WEL | 710.2 | 1620 | 2747 |
| CRC | 7.36050 | 16.76 | 28.47 |
| 45 Rh rhodium |||||||||||||||||||||||||||||||
| use | 719.7 | 1740 | 2997 |
| WEL | 719.7 | 1740 | 2997 |
| CRC | 7.45890 | 18.08 | 31.06 |
| 46 Pd palladium |||||||||||||||||||||||||||||||
| use | 804.4 | 1870 | 3177 |
| WEL | 804.4 | 1870 | 3177 |
| CRC | 8.3369 | 19.43 | 32.93 |
| 47 Ag silver |||||||||||||||||||||||||||||||
| use | 731.0 | 2070 | 3361 |
| WEL | 731.0 | 2070 | 3361 |
| CRC | 7.5762 | 21.49 | 34.83 |
| 48 Cd cadmium |||||||||||||||||||||||||||||||
| use | 867.8 | 1631.4 | 3616 |
| WEL | 867.8 | 1631.4 | 3616 |
| CRC | 8.9938 | 16.90832 | 37.48 |
| 49 In indium |||||||||||||||||||||||||||||||
| use | 558.3 | 1820.7 | 2704 | 5210 |
| WEL | 558.3 | 1820.7 | 2704 | 5210 |
| CRC | 5.78636 | 18.8698 | 28.03 | 54 |
| 50 Sn tin |||||||||||||||||||||||||||||||
| use | 708.6 | 1411.8 | 2943.0 | 3930.3 | 7456 |
| WEL | 708.6 | 1411.8 | 2943.0 | 3930.3 | 7456 |
| CRC | 7.3439 | 14.63225 | 30.50260 | 40.73502 | 72.28 |
| 51 Sb antimony |||||||||||||||||||||||||||||||
| use | 834 | 1594.9 | 2440 | 4260 | 5400 | 10400 |
| WEL | 834 | 1594.9 | 2440 | 4260 | 5400 | 10400 |
| CRC | 8.6084 | 16.53051 | 25.3 | 44.2 | 56 | 108 |
| 52 Te tellurium |||||||||||||||||||||||||||||||
| use | 869.3 | 1790 | 2698 | 3610 | 5668 | 6820 | 13200 |
| WEL | 869.3 | 1790 | 2698 | 3610 | 5668 | 6820 | 13200 |
| CRC | 9.0096 | 18.6 | 27.96 | 37.41 | 58.75 | 70.7 | 137 |
| 53 I iodine |||||||||||||||||||||||||||||||
| use | 1008.4 | 1845.9 | 3180 |
| WEL | 1008.4 | 1845.9 | 3180 |
| CRC | 10.45126 | 19.1313 | 33 |
| 54 Xe xenon |||||||||||||||||||||||||||||||
| use | 1170.4 | 2046.4 | 3099.4 |
| WEL | 1170.4 | 2046.4 | 3099.4 |
| CRC | 12.1298 | 21.20979 | 32.1230 |
| 55 Cs caesium |||||||||||||||||||||||||||||||
| use | 375.7 | 2234.3 | 3400 |
| WEL | 375.7 | 2234.3 | 3400 |
| CRC | 3.89390 | 23.15745 |
| 56 Ba barium |||||||||||||||||||||||||||||||
| use | 502.9 | 965.2 | 3600 |
| WEL | 502.9 | 965.2 | 3600 |
| CRC | 5.21170 | 10.00390 |
| 57 La lanthanum |||||||||||||||||||||||||||||||
| use | 538.1 | 1067 | 1850.3 | 4819 | 5940 |
| WEL | 538.1 | 1067 | 1850.3 | 4819 | 5940 |
| CRC | 5.5769 | 11.060 | 19.1773 | 49.95 | 61.6 |
| 58 Ce cerium |||||||||||||||||||||||||||||||
| use | 534.4 | 1050 | 1949 | 3547 | 6325 | 7490 |
| WEL | 534.4 | 1050 | 1949 | 3547 | 6325 | 7490 |
| CRC | 5.5387 | 10.85 | 20.198 | 36.758 | 65.55 | 77.6 |
| 59 Pr praseodymium |||||||||||||||||||||||||||||||
| use | 527 | 1020 | 2086 | 3761 | 5551 |
| WEL | 527 | 1020 | 2086 | 3761 | 5551 |
| CRC | 5.473 | 10.55 | 21.624 | 38.98 | 57.53 |
| 60 Nd neodymium |||||||||||||||||||||||||||||||
| use | 533.1 | 1040 | 2130 | 3900 |
| WEL | 533.1 | 1040 | 2130 | 3900 |
| CRC | 5.5250 | 10.73 | 22.1 | 40.41 |
| 61 Pm promethium |||||||||||||||||||||||||||||||
| use | 540 | 1050 | 2150 | 3970 |
| WEL | 540 | 1050 | 2150 | 3970 |
| CRC | 5.582 | 10.90 | 22.3 | 41.1 |
| 62 Sm samarium |||||||||||||||||||||||||||||||
| use | 544.5 | 1070 | 2260 | 3990 |
| WEL | 544.5 | 1070 | 2260 | 3990 |
| CRC | 5.6436 | 11.07 | 23.4 | 41.4 |
| 63 Eu europium |||||||||||||||||||||||||||||||
| use | 547.1 | 1085 | 2404 | 4120 |
| WEL | 547.1 | 1085 | 2404 | 4120 |
| CRC | 5.6704 | 11.241 | 24.92 | 42.7 |
| 64 Gd gadolinium |||||||||||||||||||||||||||||||
| use | 593.4 | 1170 | 1990 | 4250 |
| WEL | 593.4 | 1170 | 1990 | 4250 |
| CRC | 6.1501 | 12.09 | 20.63 | 44.0 |
| 65 Tb terbium |||||||||||||||||||||||||||||||
| use | 565.8 | 1110 | 2114 | 3839 |
| WEL | 565.8 | 1110 | 2114 | 3839 |
| CRC | 5.8638 | 11.52 | 21.91 | 39.79 |
| 66 Dy dysprosium |||||||||||||||||||||||||||||||
| use | 573.0 | 1130 | 2200 | 3990 |
| WEL | 573.0 | 1130 | 2200 | 3990 |
| CRC | 5.9389 | 11.67 | 22.8 | 41.47 |
| 67 Ho holmium |||||||||||||||||||||||||||||||
| use | 581.0 | 1140 | 2204 | 4100 |
| WEL | 581.0 | 1140 | 2204 | 4100 |
| CRC | 6.0215 | 11.80 | 22.84 | 42.5 |
| 68 Er erbium |||||||||||||||||||||||||||||||
| use | 589.3 | 1150 | 2194 | 4120 |
| WEL | 589.3 | 1150 | 2194 | 4120 |
| CRC | 6.1077 | 11.93 | 22.74 | 42.7 |
| 69 Tm thulium |||||||||||||||||||||||||||||||
| use | 596.7 | 1160 | 2285 | 4120 |
| WEL | 596.7 | 1160 | 2285 | 4120 |
| CRC | 6.18431 | 12.05 | 23.68 | 42.7 |
| 70 Yb ytterbium |||||||||||||||||||||||||||||||
| use | 603.4 | 1174.8 | 2417 | 4203 |
| WEL | 603.4 | 1174.8 | 2417 | 4203 |
| CRC | 6.25416 | 12.1761 | 25.05 | 43.56 |
| 71 Lu lutetium |||||||||||||||||||||||||||||||
| use | 523.5 | 1340 | 2022.3 | 4370 | 6445 |
| WEL | 523.5 | 1340 | 2022.3 | 4370 | 6445 |
| CRC | 5.4259 | 13.9 | 20.9594 | 45.25 | 66.8 |
| 72 Hf hafnium |||||||||||||||||||||||||||||||
| use | 658.5 | 1440 | 2250 | 3216 |
| WEL | 658.5 | 1440 | 2250 | 3216 |
| CRC | 6.82507 | 14.9 | 23.3 | 33.33 |
| 73 Ta tantalum |||||||||||||||||||||||||||||||
| use | 761 | 1500 |
| WEL | 761 | 1500 |
| CRC | 7.5496 |
| 74 W tungsten |||||||||||||||||||||||||||||||
| use | 770 | 1700 |
| WEL | 770 | 1700 |
| CRC | 7.8640 |
| 75 Re rhenium |||||||||||||||||||||||||||||||
| use | 760 | 1260 | 2510 | 3640 |
| WEL | 760 | 1260 | 2510 | 3640 |
| CRC | 7.8335 |
| 76 Os osmium |||||||||||||||||||||||||||||||
| use | 840 | 1600 |
| WEL | 840 | 1600 |
| CRC | 8.4382 |
| 77 Ir iridium |||||||||||||||||||||||||||||||
| use | 880 | 1600 |
| WEL | 880 | 1600 |
| CRC | 8.9670 |
| 78 Pt platinum |||||||||||||||||||||||||||||||
| use | 870 | 1791 |
| WEL | 870 | 1791 |
| CRC | 8.9587 | 18.563 | 28 |
| 79 Au gold |||||||||||||||||||||||||||||||
| use | 890.1 | 1980 |
| WEL | 890.1 | 1980 |
| CRC | 9.2255 | 20.5 | 30 |
| 80 Hg mercury |||||||||||||||||||||||||||||||
| use | 1007.1 | 1810 | 3300 |
| WEL | 1007.1 | 1810 | 3300 |
| CRC | 10.43750 | 18.756 | 34.2 |
| 81 Tl thallium |||||||||||||||||||||||||||||||
| use | 589.4 | 1971 | 2878 |
| WEL | 589.4 | 1971 | 2878 |
| CRC | 6.1082 | 20.428 | 29.83 |
| 82 Pb lead |||||||||||||||||||||||||||||||
| use | 715.6 | 1450.5 | 3081.5 | 4083 | 6640 |
| WEL | 715.6 | 1450.5 | 3081.5 | 4083 | 6640 |
| CRC | 7.41666 | 15.0322 | 31.9373 | 42.32 | 68.8 |
| 83 Bi bismuth |||||||||||||||||||||||||||||||
| use | 703 | 1610 | 2466 | 4370 | 5400 | 8520 |
| WEL | 703 | 1610 | 2466 | 4370 | 5400 | 8520 |
| CRC | 7.2856 | 16.69 | 25.56 | 45.3 | 56.0 | 88.3 |
| 84 Po polonium |||||||||||||||||||||||||||||||
| use | 812.1 |
| WEL | 812.1 |
| CRC | 8.417 |
| 85 At astatine |||||||||||||||||||||||||||||||
| use | 899.003 |
| WEL | 920 |
| CRC |
| talk | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. | Originally quoted as 9.31751(8) eV. |
| 86 Rn radon |||||||||||||||||||||||||||||||
| use | 1037 |
| WEL | 1037 |
| CRC | 10.74850 |
| 87 Fr francium |||||||||||||||||||||||||||||||
| use | 380 |
| WEL | 380 |
| CRC | 4.0727 |
| talk | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) | Andreev, S.V.; Letokhov, V.S.; Mishin, V.I. (1987). "Laser resonance photoionization spectroscopy of Rydberg levels in Fr". Phys. Rev. Lett. 59 (12): 1274–76. Bibcode:1987PhRvL..59.1274A. doi:10.1103/PhysRevLett.59.1274. PMID 10035190. give 4.0712±0.00004 eV (392.811(4) kJ/mol) |
| 88 Ra radium |||||||||||||||||||||||||||||||
| use | 509.3 | 979.0 |
| WEL | 509.3 | 979.0 |
| CRC | 5.2784 | 10.14716 |
| 89 Ac actinium |||||||||||||||||||||||||||||||
| use | 499 | 1170 |
| WEL | 499 | 1170 |
| CRC | 5.17 | 12.1 |
| 90 Th thorium |||||||||||||||||||||||||||||||
| use | 587 | 1110 | 1930 | 2780 |
| WEL | 587 | 1110 | 1930 | 2780 |
| CRC | 6.3067 | 11.5 | 20.0 | 28.8 |
| 91 Pa protactinium |||||||||||||||||||||||||||||||
| use | 568 |
| WEL | 568 |
| CRC | 5.89 |
| 92 U uranium |||||||||||||||||||||||||||||||
| use | 597.6 | 1420 |
| WEL | 597.6 | 1420 |
| CRC | 6.19405 | 14.72 |
| 93 Np neptunium |||||||||||||||||||||||||||||||
| use | 604.5 |
| WEL | 604.5 |
| CRC | 6.2657 |
| 94 Pu plutonium |||||||||||||||||||||||||||||||
| use | 584.7 |
| WEL | 584.7 |
| CRC | 6.0262 |
| 95 Am americium |||||||||||||||||||||||||||||||
| use | 578 |
| WEL | 578 |
| CRC | 5.9738 |
| 96 Cm curium |||||||||||||||||||||||||||||||
| use | 581 |
| WEL | 581 |
| CRC | 5.9915 |
| 97 Bk berkelium |||||||||||||||||||||||||||||||
| use | 601 |
| WEL | 601 |
| CRC | 6.1979 |
| 98 Cf californium |||||||||||||||||||||||||||||||
| use | 608 |
| WEL | 608 |
| CRC | 6.2817 |
| 99 Es einsteinium |||||||||||||||||||||||||||||||
| use | 619 |
| WEL | 619 |
| CRC | 6.42 |
| 100 Fm fermium |||||||||||||||||||||||||||||||
| use | 627 |
| WEL | 627 |
| CRC | 6.50 |
| 101 Md mendelevium |||||||||||||||||||||||||||||||
| use | 635 |
| WEL | 635 |
| CRC | 6.58 |
| 102 No nobelium |||||||||||||||||||||||||||||||
| use | 642 |
| WEL |
| CRC | 6.65 |
| 103 Lr lawrencium |||||||||||||||||||||||||||||||
| use | 470 |
| WEL |
| CRC | 4.9 |
| 104 Rf rutherfordium |||||||||||||||||||||||||||||||
| use | 580 |
| WEL |
| CRC | 6.0 |