Section: 10 | Ionization Energies of Atoms and Atomic Ions |

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The table 'Ionization Energies of Atoms in Ionization Stages I through XXX' has one or more different columns to those in the book version.
The table 'TABLE 1. Ionization Energies in eV of Atoms Z = 1 to 104 in Ionization States I (Neutral) to VIII' has one or more different columns to those in the book version.
The table 'TABLE 2. Ionization Energies in eV for Atoms Z = 9 to 42 in Ionization States IX - XVI' has one or more different columns to those in the book version.
The table 'TABLE 3. Ionization Energies in eV for Atoms Z = 17 to 42 in Ionization States XVII to XXIV' has one or more different columns to those in the book version.
The table 'TABLE 4. Ionization Energies in eV for Atoms Z = 25 to 42 in Ionization States XXV to XXX' has one or more different columns to those in the book version.

How to Cite this Reference

IONIZATION ENERGIES OF ATOMS AND ATOMIC IONS

The ionization energies (often called ionization potentials) of neutral and partially ionized atoms are listed in this table. Data were obtained from the compilations cited below, supplemented by results from the recent research literature. Values for the first and second ionization energies come from Reference 6. All values are given in electron volts (eV).

Following the traditional spectroscopic notation, columns are headed I, II, III, etc. up to XXX, where I indicates the neutral atom, II the singly ionized atom, III the doubly ionized atom, etc.

References

Moore, C. E., Ionization Potentials and Ionization Limits Derived from the Analysis of Optical Spectra, Natl. Stand. Ref. Data Ser. — Natl. Bur. Stand. (U.S.) No. 34, 1970. [https://doi.org/10.6028/NBS.NSRDS.34]
Martin, W. C., Zalubas, R., and Hagan, L., Atomic Energy Levels — The Rare Earth Elements, Natl. Stand. Ref. Data Ser. — Natl. Bur. Stand. (U.S.), No. 60, 1978. [https://doi.org/10.6028/NBS.NSRDS.60]
Sugar, J. and Corliss, C., Atomic Energy Levels of the Iron Period Elements: Potassium through Nickel, J. Phys. Chem. Ref. Data, Vol.14, Suppl. 2, 1985.
References to papers in J. Phys. Chem. Ref. Data, in the period 1973–91 covering other elements may be found in the cumulative index to that journal.
Martin, W.C., and Wiese, W.L., in Atomic, Molecular, and Optical Physics Handbook, Drake, G.W.F., Ed., AIP Press, New York, 1996.
Sansonetti, J. E., Martin, W. C., and Young, S. L., Handbook of Basic Atomic Spectroscopic Data (version 1.1), NIST Physical Data web site <http://physics.nist.gov/PhysRefData/Handbook> (October 2004); J. Phys. Chem. Ref. Data, 34, 1559, 2005. [https://doi.org/10.1063/1.1800011]

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Ionization Energies of Atoms in Ionization Stages I through XXX

Z	Name	Formula	I	II	III	IV	V	VI	VII	VIII	IX	X	XI	XII	XIII	XIV	XV	XVI	XVII	XVIII	XIX	XX	XXI	XXII	XXIII	XXIV	XXV	XXVI	XXVII	XXVIII	XXIX	XXX
Continued on next page...
1	Hydrogen	H	13.598443
2	Helium	He	24.587387	54.417760
3	Lithium	Li	5.391719	75.6400	122.45429
4	Beryllium	Be	9.32270	18.21114	153.89661	217.71865
5	Boron	B	8.29802	25.1548	37.93064	259.37521	340.22580
6	Carbon	C	11.26030	24.3833	47.8878	64.4939	392.087	489.99334
7	Nitrogen	N	14.5341	29.6013	47.44924	77.4735	97.8902	552.0718	667.046
8	Oxygen	O	13.61805	35.1211	54.9355	77.41353	113.8990	138.1197	739.29	871.4101
9	Fluorine	F	17.4228	34.9708	62.7084	87.1398	114.2428	157.1651	185.186	953.9112	1103.1176
10	Neon	Ne	21.56454	40.96296	63.45	97.12	126.21	157.93	207.2759	239.0989	1195.8286	1362.1995
11	Sodium	Na	5.139076	47.2864	71.6200	98.91	138.40	172.18	208.50	264.25	299.864	1465.121	1648.702
12	Magnesium	Mg	7.646235	15.03527	80.1437	109.2655	141.27	186.76	225.02	265.96	328.06	367.50	1761.805	1962.6650
13	Aluminum	Al	5.985768	18.82855	28.44765	119.992	153.825	190.49	241.76	284.66	330.13	398.75	442.00	2085.98	2304.1410
14	Silicon	Si	8.15168	16.34584	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	Phosphorus	P	10.48669	19.7695	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	Sulfur	S	10.36001	23.33788	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	Chlorine	Cl	12.96763	23.8136	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	Argon	Ar	15.759610	27.62966	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	Potassium	K	4.3406633	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

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IONIZATION ENERGIES OF ATOMS AND ATOMIC IONS

References

Ionization Energies of Atoms in Ionization Stages I through XXX

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