HHomeBackground Color:He
LiBeBlack White GrayBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg

Ionization Energies of the elements

Text lists sorted by: Value | Atomic Number | Alphabetical
Plots: Shaded | Ball | Crossed Line | Scatter | Sorted Scatter
Log scale plots: Shaded | Ball | Crossed Line | Scatter | Sorted Scatter
Good for this property: Scatter
Point to the graph to see details, or click for full data on that element.

data plot
Key to values:
375.7
375.7, 2234.3, 3400 kJ/mol
380.
380 kJ/mol
403.0
403, 2633, 3860, 5080, 6850, 8140, 9570, 13120, 14500, 26740 kJ/mol
418.8
418.8, 3052, 4420, 5877, 7975, 9590, 11343, 14944, 16963.7, 48610 kJ/mol
495.8
495.8, 4562, 6910.3, 9543, 13354, 16613, 20117, 25496, 28932, 141362 kJ/mol
499.
499, 1170 kJ/mol
502.9
502.9, 965.2, 3600 kJ/mol
509.3
509.3, 979 kJ/mol
520.2
520.2, 7298.1, 11815 kJ/mol
523.5
523.5, 1340, 2022.3, 4370, 6445 kJ/mol
527.
527, 1020, 2086, 3761, 5551 kJ/mol
533.1
533.1, 1040, 2130, 3900 kJ/mol
534.4
534.4, 1050, 1949, 3547, 6325, 7490 kJ/mol
538.1
538.1, 1067, 1850.3, 4819, 5940 kJ/mol
540.
540, 1050, 2150, 3970 kJ/mol
544.5
544.5, 1070, 2260, 3990 kJ/mol
547.1
547.1, 1085, 2404, 4120 kJ/mol
549.5
549.5, 1064.2, 4138, 5500, 6910, 8760, 10230, 11800, 15600, 17100 kJ/mol
558.3
558.3, 1820.7, 2704, 5210 kJ/mol
565.8
565.8, 1110, 2114, 3839 kJ/mol
568.
568 kJ/mol
573.0
573, 1130, 2200, 3990 kJ/mol
577.5
577.5, 1816.7, 2744.8, 11577, 14842, 18379, 23326, 27465, 31853, 38473 kJ/mol
578.
578 kJ/mol
578.8
578.8, 1979.3, 2963, 6180 kJ/mol
581.
581 kJ/mol
581.0
581, 1140, 2204, 4100 kJ/mol
584.7
584.7 kJ/mol
587.
587, 1110, 1930, 2780 kJ/mol
589.3
589.3, 1150, 2194, 4120 kJ/mol
589.4
589.4, 1971, 2878 kJ/mol
589.8
589.8, 1145.4, 4912.4, 6491, 8153, 10496, 12270, 14206, 18191, 20385, 57110 kJ/mol
593.4
593.4, 1170, 1990, 4250 kJ/mol
596.7
596.7, 1160, 2285, 4120 kJ/mol
597.6
597.6, 1420 kJ/mol
2 6.0 10
600, 1180, 1980, 5847, 7430, 8970, 11190, 12450, 14110, 18400 kJ/mol
601.
601 kJ/mol
603.4
603.4, 1174.8, 2417, 4203 kJ/mol
604.5
604.5 kJ/mol
608.
608 kJ/mol
619.
619 kJ/mol
627.
627 kJ/mol
633.1
633.1, 1235, 2388.6, 7090.6, 8843, 10679, 13310, 15250, 17370, 21726, 24102, 66320, 73010, 80160, 89490, 97400, 105600, 117000, 124270, 547530, 582163 kJ/mol
635.
635 kJ/mol
640.1
640.1, 1270, 2218, 3313, 7752, 9500 kJ/mol
642.
642 kJ/mol
650.9
650.9, 1414, 2830, 4507, 6298.7, 12363, 14530, 16730, 19860, 22240, 24670, 29730, 32446, 86450, 94170, 102300, 112700, 121600, 130700, 143400, 151440 kJ/mol
652.1
652.1, 1380, 2416, 3700, 4877, 9847, 12100 kJ/mol
652.9
652.9, 1590.6, 2987, 4743, 6702, 8744.9, 15455, 17820, 20190, 23580, 26130, 28750, 34230, 37066, 97510, 105800, 114300, 125300, 134700, 144300, 157700 kJ/mol
658.5
658.5, 1440, 2250, 3216 kJ/mol
658.8
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 kJ/mol
684.3
684.3, 1560, 2618, 4480, 5257, 6640.8, 12125, 13860, 15835, 17980, 20190, 22219, 26930, 29196, 52490, 55000, 61400, 67700, 74000, 80400, 87000 kJ/mol
702.
702, 1470, 2850 kJ/mol
703.
703, 1610, 2466, 4370, 5400, 8520 kJ/mol
708.6
708.6, 1411.8, 2943, 3930.3, 7456 kJ/mol
710.2
710.2, 1620, 2747 kJ/mol
715.6
715.6, 1450.5, 3081.5, 4083, 6640 kJ/mol
717.3
717.3, 1509, 3248, 4940, 6990, 9220, 11500, 18770, 21400, 23960, 27590, 30330, 33150, 38880, 41987, 109480, 118100, 127100, 138600, 148500, 158600 kJ/mol
719.7
719.7, 1740, 2997 kJ/mol
731.0
731, 2070, 3361 kJ/mol
737.1
737.1, 1753, 3395, 5300, 7339, 10400, 12800, 15600, 18600, 21670, 30970, 34000, 37100, 41500, 44800, 48100, 55101, 58570, 148700, 159000, 169400 kJ/mol
737.7
737.7, 1450.7, 7732.7, 10542.5, 13630, 18020, 21711, 25661, 31653, 35458 kJ/mol
745.5
745.5, 1957.9, 3555, 5536, 7700, 9900, 13400, 16000, 19200, 22400, 25600, 35600, 38700, 42000, 46700, 50200, 53700, 61100, 64702, 163700, 174100 kJ/mol
760.
760, 1260, 2510, 3640 kJ/mol
760.4
760.4, 1648, 3232, 4950, 7670, 9840, 12440, 15230, 17959, 26570, 29400, 32400, 36600, 39700, 42800, 49396, 52737, 134810, 145170, 154700, 167400 kJ/mol
761.
761, 1500 kJ/mol
762.
762, 1537.5, 3302.1, 4411, 9020 kJ/mol
762.5
762.5, 1561.9, 2957, 5290, 7240, 9560, 12060, 14580, 22540, 25290, 28000, 31920, 34830, 37840, 44100, 47206, 122200, 131000, 140500, 152600, 163000 kJ/mol
770.
770, 1700 kJ/mol
786.5
786.5, 1577.1, 3231.6, 4355.5, 16091, 19805, 23780, 29287, 33878, 38726 kJ/mol
800.6
800.6, 2427.1, 3659.7, 25025.8, 32826.7 kJ/mol
804.4
804.4, 1870, 3177 kJ/mol
812.1
812.1 kJ/mol
834.
834, 1594.9, 2440, 4260, 5400, 10400 kJ/mol
840.
840, 1600 kJ/mol
867.8
867.8, 1631.4, 3616 kJ/mol
869.3
869.3, 1790, 2698, 3610, 5668, 6820, 13200 kJ/mol
870.
870, 1791 kJ/mol
880.
880, 1600 kJ/mol
890.1
890.1, 1980 kJ/mol
899.5
899.5, 1757.1, 14848.7, 21006.6 kJ/mol
906.4
906.4, 1733.3, 3833, 5731, 7970, 10400, 12900, 16800, 19600, 23000, 26400, 29990, 40490, 43800, 47300, 52300, 55900, 59700, 67300, 71200, 179100 kJ/mol
920.
920 kJ/mol
941.0
941, 2045, 2973.7, 4144, 6590, 7880, 14990 kJ/mol
947.0
947, 1798, 2735, 4837, 6043, 12310 kJ/mol
999.6
999.6, 2252, 3357, 4556, 7004.3, 8495.8, 27107, 31719, 36621, 43177 kJ/mol
1007.1
1007.1, 1810, 3300 kJ/mol
1008.4
1008.4, 1845.9, 3180 kJ/mol
1011.8
1011.8, 1907, 2914.1, 4963.6, 6273.9, 21267, 25431, 29872, 35905, 40950 kJ/mol
1037.
1037 kJ/mol
1086.5
1086.5, 2352.6, 4620.5, 6222.7, 37831, 47277 kJ/mol
1139.9
1139.9, 2103, 3470, 4560, 5760, 8550, 9940, 18600 kJ/mol
1170.4
1170.4, 2046.4, 3099.4 kJ/mol
1251.2
1251.2, 2298, 3822, 5158.6, 6542, 9362, 11018, 33604, 38600, 43961 kJ/mol
1312.0
1312 kJ/mol
1313.9
1313.9, 3388.3, 5300.5, 7469.2, 10989.5, 13326.5, 71330, 84078 kJ/mol
1350.8
1350.8, 2350.4, 3565, 5070, 6240, 7570, 10710, 12138, 22274, 25880, 29700, 33800, 37700, 43100, 47500, 52200, 57100, 61800, 75800, 80400, 85300 kJ/mol
1402.3
1402.3, 2856, 4578.1, 7475, 9444.9, 53266.6, 64360 kJ/mol
1520.6
1520.6, 2665.8, 3931, 5771, 7238, 8781, 11995, 13842, 40760, 46186 kJ/mol
1681.0
1681, 3374.2, 6050.4, 8407.7, 11022.7, 15164.1, 17868, 92038.1, 106434.3 kJ/mol
2080.7
2080.7, 3952.3, 6122, 9371, 12177, 15238, 19999, 23069.5, 115379.5, 131432 kJ/mol
2372.3
2372.3, 5250.5 kJ/mol
N/AN/A


Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.

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Common Properties
Abundance in Earth's Crust Discovery Year
Abundance in Humans Electrical Conductivity
Abundance in Meteorites Electron Affinity
Abundance in the Ocean Electron Configuration
Abundance in the Sun Electronegativity
Abundance in the Universe Half Life
Atomic Mass Heat of Fusion
Atomic Number Heat of Vaporization
Atomic Radius Ionization Energies
Boiling Point Melting Point
Covalent Radius Specific Heat
Density
 
Other Properties
Adiabatic Index Mohs Hardness
Allotrope Names Molar Magnetic Susceptibility
Alternate Names Molar Volume
Block Neutron Cross Section
Brinell Hardness Neutron Mass Absorption
Bulk Modulus NFPA Label
CAS Number Period
CID Number Phase
Color Poisson Ratio
Critical Pressure Quantum Numbers
Critical Temperature Radioactive
Crystal Structure Refractive Index
Curie Point Resistivity
Decay Mode RTECS Number
DOT Hazard Class Series
DOT Numbers Shear Modulus
Electrical Type Space Group Name
Gas Atomic Multiplicities Space Group Number
Group Speed of Sound
Isotope Abundances Superconducting Point
Isotopes (All Known) Symbol
Isotopes (Stable) Thermal Conductivity
Lattice Angles Thermal Expansion
Lattice Constants Valence
Lifetime Van Der Waals Radius
Liquid Density Vickers Hardness
Magnetic Type Volume Magnetic Susceptibility
Mass Magnetic Susceptibility Young Modulus
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