From Freepedia
These tables list the ionization energy in kJ/mol necessary to remove an electron from a neutral atom (first energy), respectively from a singly, doubly, etc. ionized atom (second, third, etc. energies).
1st–10th
| number | symbol | name
| 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th
|
| 1 | H | hydrogen
| 1312.0
|
| 2 | He | helium
| 2372.3 | 5250.5
|
| 3 | Li | lithium
| 520.2 | 7298.1 | 11815.0
|
| 4 | Be | beryllium
| 899.5 | 1757.1 | 14848.7 | 21006.6
|
| 5 | B | boron
| 800.6 | 2427.1 | 3659.7 | 25025.8 | 32826.7
|
| 6 | C | carbon
| 1086.5 | 2352.6 | 4620.5 | 6222.7 | 37831 | 47277.0
|
| 7 | N | nitrogen
| 1402.3 | 2856 | 4578.1 | 7475.0 | 9444.9 | 53266.6 | 64360
|
| 8 | O | oxygen
| 1313.9 | 3388.3 | 5300.5 | 7469.2 | 10989.5 | 13326.5 | 71330 | 84078.0
|
| 9 | F | fluorine
| 1681.0 | 3374.2 | 6050.4 | 8407.7 | 11022.7 | 15164.1 | 17868 | 92038.1 | 106434.3
|
| 10 | Ne | neon
| 2080.7 | 3952.3 | 6122 | 9371 | 12177 | 15238 | 19999.0 | 23069.5 | 115379.5 | 131432
|
| 11 | Na | sodium
| 495.8 | 4562 | 6910.3 | 9543 | 13354 | 16613 | 20117 | 25496 | 28932 | 141362
|
| 12 | Mg | magnesium
| 737.7 | 1450.7 | 7732.7 | 10542.5 | 13630 | 18020 | 21711 | 25661 | 31653 | 35458
|
| 13 | Al | aluminium
| 577.5 | 1816.7 | 2744.8 | 11577 | 14842 | 18379 | 23326 | 27465 | 31853 | 38473
|
| 14 | Si | silicon
| 786.5 | 1577.1 | 3231.6 | 4355.5 | 16091 | 19805 | 23780 | 29287 | 33878 | 38726
|
| 15 | P | phosphorus
| 1011.8 | 1907 | 2914.1 | 4963.6 | 6273.9 | 21267 | 25431 | 29872 | 35905 | 40950
|
| 16 | S | sulfur
| 999.6 | 2252 | 3357 | 4556 | 7004.3 | 8495.8 | 27107 | 31719 | 36621 | 43177
|
| 17 | Cl | chlorine
| 1251.2 | 2298 | 3822 | 5158.6 | 6542 | 9362 | 11018 | 33604 | 38600 | 43961
|
| 18 | Ar | argon
| 1520.6 | 2665.8 | 3931 | 5771 | 7238 | 8781 | 11995 | 13842 | 40760 | 46186
|
| 19 | K | potassium
| 418.8 | 3052 | 4420 | 5877 | 7975 | 9590 | 11343 | 14944 | 16963.7 | 48610
|
| 20 | Ca | calcium
| 589.8 | 1145.4 | 4912.4 | 6491 | 8153 | 10496 | 12270 | 14206 | 18191 | 20385
|
| 21 | Sc | scandium
| 633.1 | 1235.0 | 2388.6 | 7090.6 | 8843 | 10679 | 13310 | 15250 | 17370 | 21726
|
| 22 | Ti | titanium
| 658.8 | 1309.8 | 2652.5 | 4174.6 | 9581 | 11533 | 13590 | 16440 | 18530 | 20833
|
| 23 | V | vanadium
| 650.9 | 1414 | 2830 | 4507 | 6298.7 | 12363 | 14530 | 16730 | 19860 | 22240
|
| 24 | Cr | chromium
| 652.9 | 1590.6 | 2987 | 4743 | 6702 | 8744.9 | 15455 | 17820 | 20190 | 23580
|
| 25 | Mn | manganese
| 717.3 | 1509.0 | 3248 | 4940 | 6990 | 9220 | 11500 | 18770 | 21400 | 23960
|
| 26 | Fe | iron
| 762.5 | 1561.9 | 2957 | 5290 | 7240 | 9560 | 12060 | 14580 | 22540 | 25290
|
| 27 | Co | cobalt
| 760.4 | 1648 | 3232 | 4950 | 7670 | 9840 | 12440 | 15230 | 17959 | 26570
|
| 28 | Ni | nickel
| 737.1 | 1753.0 | 3395 | 5300 | 7339 | 10400 | 12800 | 15600 | 18600 | 21670
|
| 29 | Cu | copper
| 745.5 | 1957.9 | 3555 | 5536 | 7700 | 9900 | 13400 | 16000 | 19200 | 22400
|
| 30 | Zn | zinc
| 906.4 | 1733.3 | 3833 | 5731 | 7970 | 10400 | 12900 | 16800 | 19600 | 23000
|
| 31 | Ga | gallium
| 578.8 | 1979.3 | 2963 | 6180
|
| 32 | Ge | germanium
| 762 | 1537.5 | 3302.1 | 4411 | 9020
|
| 33 | As | arsenic
| 947.0 | 1798 | 2735 | 4837 | 6043 | 12310
|
| 34 | Se | selenium
| 941.0 | 2045 | 2973.7 | 4144 | 6590 | 7880 | 14990
|
| 35 | Br | bromine
| 1139.9 | 2103 | 3470 | 4560 | 5760 | 8550 | 9940 | 18600
|
| 36 | Kr | krypton
| 1350.8 | 2350.4 | 3565 | 5070 | 6240 | 7570 | 10710 | 12138 | 22274 | 25880
|
| 37 | Rb | rubidium
| 403.0 | 2633 | 3860 | 5080 | 6850 | 8140 | 9570 | 13120 | 14500 | 26740
|
| 38 | Sr | strontium
| 549.5 | 1064.2 | 4138 | 5500 | 6910 | 8760 | 10230 | 11800 | 15600 | 17100
|
| 39 | Y | yttrium
| 600 | 1180 | 1980 | 5847 | 7430 | 8970 | 11190 | 12450 | 14110 | 18400
|
| 40 | Zr | zirconium
| 640.1 | 1270 | 2218 | 3313 | 7752 | 9500
|
| 41 | Nb | niobium
| 652.1 | 1380 | 2416 | 3700 | 4877 | 9847 | 12100
|
| 42 | Mo | molybdenum
| 684.3 | 1560 | 2618 | 4480 | 5257 | 6640.8 | 12125 | 13860 | 15835 | 17980
|
| 43 | Tc | technetium
| 702 | 1470 | 2850
|
| 44 | Ru | ruthenium
| 710.2 | 1620 | 2747
|
| 45 | Rh | rhodium
| 719.7 | 1740 | 2997
|
| 46 | Pd | palladium
| 804.4 | 1870 | 3177
|
| 47 | Ag | silver
| 731.0 | 2070 | 3361
|
| 48 | Cd | cadmium
| 867.8 | 1631.4 | 3616
|
| 49 | In | indium
| 558.3 | 1820.7 | 2704 | 5210
|
| 50 | Sn | tin
| 708.6 | 1411.8 | 2943.0 | 3930.3 | 7456
|
| 51 | Sb | antimony
| 834 | 1594.9 | 2440 | 4260 | 5400 | 10400
|
| 52 | Te | tellurium
| 869.3 | 1790 | 2698 | 3610 | 5668 | 6820 | 13200
|
| 53 | I | iodine
| 1008.4 | 1845.9 | 3180
|
| 54 | Xe | xenon
| 1170.4 | 2046.4 | 3099.4
|
| 55 | Cs | caesium
| 375.7 | 2234.3 | 3400
|
| 56 | Ba | barium
| 502.9 | 965.2 | 3600
|
| 57 | La | lanthanum
| 538.1 | 1067 | 1850.3 | 4819 | 5940
|
| 58 | Ce | cerium
| 534.4 | 1050 | 1949 | 3547 | 6325 | 7490
|
| 59 | Pr | praseodymium
| 527 | 1020 | 2086 | 3761 | 5551
|
| 60 | Nd | neodymium
| 533.1 | 1040 | 2130 | 3900
|
| 61 | Pm | promethium
| 540 | 1050 | 2150 | 3970
|
| 62 | Sm | samarium
| 544.5 | 1070 | 2260 | 3990
|
| 63 | Eu | europium
| 547.1 | 1085 | 2404 | 4120
|
| 64 | Gd | gadolinium
| 593.4 | 1170 | 1990 | 4250
|
| 65 | Tb | terbium
| 565.8 | 1110 | 2114 | 3839
|
| 66 | Dy | dysprosium
| 573.0 | 1130 | 2200 | 3990
|
| 67 | Ho | holmium
| 581.0 | 1140 | 2204 | 4100
|
| 68 | Er | erbium
| 589.3 | 1150 | 2194 | 4120
|
| 69 | Tm | thulium
| 596.7 | 1160 | 2285 | 4120
|
| 70 | Yb | ytterbium
| 603.4 | 1174.8 | 2417 | 4203
|
| 71 | Lu | lutetium
| 523.5 | 1340 | 2022.3 | 4370 | 6445
|
| 72 | Hf | hafnium
| 658.5 | 1440 | 2250 | 3216
|
| 73 | Ta | tantalum
| 761 | 1500
|
| 74 | W | tungsten
| 770 | 1700
|
| 75 | Re | rhenium
| 760 | 1260 | 2510 | 3640
|
| 76 | Os | osmium
| 840 | 1600
|
| 77 | Ir | iridium
| 880 | 1600
|
| 78 | Pt | platinum
| 870 | 1791
|
| 79 | Au | gold
| 890.1 | 1980
|
| 80 | Hg | mercury
| 1007.1 | 1810 | 3300
|
| 81 | Tl | thallium
| 589.4 | 1971 | 2878
|
| 82 | Pb | lead
| 715.6 | 1450.5 | 3081.5 | 4083 | 6640
|
| 83 | Bi | bismuth
| 703 | 1610 | 2466 | 4370 | 5400 | 8520
|
| 84 | Po | polonium
| 812.1
|
| 85 | At | astatine
| 920
|
| 86 | Rn | radon
| 1037
|
| 87 | Fr | francium
| 380
|
| 88 | Ra | radium
| 509.3 | 979.0
|
| 89 | Ac | actinium
| 499 | 1170
|
| 90 | Th | thorium
| 587 | 1110 | 1930 | 2780
|
| 91 | Pa | protactinium
| 568
|
| 92 | U | uranium
| 597.6 | 1420
|
| 93 | Np | neptunium
| 604.5
|
| 94 | Pu | plutonium
| 584.7
|
| 95 | Am | americium
| 578
|
| 96 | Cm | curium
| 581
|
| 97 | Bk | berkelium
| 601
|
| 98 | Cf | californium
| 608
|
| 99 | Es | einsteinium
| 619
|
| 100 | Fm | fermium
| 627
|
| 101 | Md | mendelevium
| 635
|
| 102 | No | nobelium
| 642
|
| 103 | Lr | lawrencium
| 470
|
| 104 | Rf | rutherfordium
| 580
|
11th–20th
| number | symbol | name
| 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th
|
| 11 | Na | sodium
| 159076
|
| 12 | Mg | magnesium
| 169988 | 189368
|
| 13 | Al | aluminium
| 42647 | 201266 | 222316
|
| 14 | Si | silicon
| 45962 | 50502 | 235196 | 257923
|
| 15 | P | phosphorus
| 46261 | 54110 | 59024 | 271791 | 296195
|
| 16 | S | sulfur
| 48710 | 54460 | 62930 | 68216 | 311048 | 337138
|
| 17 | Cl | chlorine
| 51068 | 57119 | 63363 | 72341 | 78095 | 352994 | 380760
|
| 18 | Ar | argon
| 52002 | 59653 | 66199 | 72918 | 82473 | 88576 | 397605 | 427066
|
| 19 | K | potassium
| 54490 | 60730 | 68950 | 75900 | 83080 | 93400 | 99710 | 444880 | 476063
|
| 20 | Ca | calcium
| 57110 | 63410 | 70110 | 78890 | 86310 | 94000 | 104900 | 111711 | 494850 | 527762
|
| 21 | Sc | scandium
| 24102 | 66320 | 73010 | 80160 | 89490 | 97400 | 105600 | 117000 | 124270 | 547530
|
| 22 | Ti | titanium
| 25575 | 28125 | 76015 | 83280 | 90880 | 100700 | 109100 | 117800 | 129900 | 137530
|
| 23 | V | vanadium
| 24670 | 29730 | 32446 | 86450 | 94170 | 102300 | 112700 | 121600 | 130700 | 143400
|
| 24 | Cr | chromium
| 26130 | 28750 | 34230 | 37066 | 97510 | 105800 | 114300 | 125300 | 134700 | 144300
|
| 25 | Mn | manganese
| 27590 | 30330 | 33150 | 38880 | 41987 | 109480 | 118100 | 127100 | 138600 | 148500
|
| 26 | Fe | iron
| 28000 | 31920 | 34830 | 37840 | 44100 | 47206 | 122200 | 131000 | 140500 | 152600
|
| 27 | Co | cobalt
| 29400 | 32400 | 36600 | 39700 | 42800 | 49396 | 52737 | 134810 | 145170 | 154700
|
| 28 | Ni | nickel
| 30970 | 34000 | 37100 | 41500 | 44800 | 48100 | 55101 | 58570 | 148700 | 159000
|
| 29 | Cu | copper
| 25600 | 35600 | 38700 | 42000 | 46700 | 50200 | 53700 | 61100 | 64702 | 163700
|
| 30 | Zn | zinc
| 26400 | 29990 | 40490 | 43800 | 47300 | 52300 | 55900 | 59700 | 67300 | 71200
|
| 36 | Kr | krypton
| 29700 | 33800 | 37700 | 43100 | 47500 | 52200 | 57100 | 61800 | 75800 | 80400
|
| 38 | Sr | strontium
| 31270
|
| 39 | Y | yttrium
| 19900 | 36090
|
| 42 | Mo | molybdenum
| 20190 | 22219 | 26930 | 29196 | 52490 | 55000 | 61400 | 67700 | 74000 | 80400
|
21st–30th
| number | symbol | name
| 21st | 22nd | 23rd | 24th | 25th | 26th | 27th | 28th | 29th | 30th
|
| 21 | Sc | scandium
| 582163
|
| 22 | Ti | titanium
| 602930 | 639294
|
| 23 | V | vanadium
| 151440 | 661050 | 699144
|
| 24 | Cr | chromium
| 157700 | 166090 | 721870 | 761733
|
| 25 | Mn | manganese
| 158600 | 172500 | 181380 | 785450 | 827067
|
| 26 | Fe | iron
| 163000 | 173600 | 188100 | 195200 | 851800 | 895161
|
| 27 | Co | cobalt
| 167400 | 178100 | 189300 | 204500 | 214100 | 920870 | 966023
|
| 28 | Ni | nickel
| 169400 | 182700 | 194000 | 205600 | 221400 | 231490 | 992718 | 1039668
|
| 29 | Cu | copper
| 174100 | 184900 | 198800 | 210500 | 222700 | 239100 | 249660 | 1067358 | 1116105
|
| 30 | Zn | zinc
| 179100
|
| 36 | Kr | krypton
| 85300 | 90400 | 96300 | 101400 | 111100 | 116290 | 282500 | 296200 | 311400 | 326200
|
| 42 | Mo | molybdenum
| 87000 | 93400 | 98420 | 104400 | 121900 | 127700 | 133800 | 139800 | 148100 | 154500
|
References