Ionization Energy Periodic Table of the Elements

Periodic Table with Ionization Energies

 

The ionization energy of an atom or ion is the minimum energy required to remove an electron from the ground state of the isolated gaseous atom or ion. The first ionization energy, I₁, is the energy needed to remove the first electron from a neutral atom.

M (g) —› M⁺ (g) + e^-

It is related to the atom's electronegativity and electron affinity. Tables of electronegativities and electron affinities were given in the posts entitled "Electronegativities Periodic Table of the Elements" and "Electron Affinities Periodic Table of the Elements". A table of first ionization energies of the elements is given below.

 

Table 1: Periodic Table with Ionization Energies (kJ/mol) of gaseous atoms of the elements

1	2	3	4	5	6	7	8	9	10	11	12
H 1312.00
Li 520.2	Be 899.4
Na 495.8	Mg 737.7
K 418.8	Ca 589.8	Sc 631	Ti 658	V 650	Cr 652.8	Mn 717.4	Fe 759.3	Co 758	Ni 736.7	Cu 745.4	Zn 906.4
Rb 403.0	Sr 549.5	Y 616	Zr 660	Nb 664	Mo 684.9	Tc 702	Ru 711	Rh 720	Pd 805	Ag 731.0	Cd 867.7
Cs 375.7	Ba 502.9	La 523.5	Hf 654	Ta 761	W 770	Re 760	Os 840	Ir 880	Pt 868	Au 890.1	Hg 1007.0
Fr ˜400	Ra	Ac	Th	Pa	U	Np

 

Table 1 (continued...)

13	14	15	16	17	17
B 800.6	C 1086.4	N 1402.3	O 140.98	F 1681.0	He 2372.3
Al 577.6	Si 786.4	P 1011.7	S 200.41	Cl 1251.1	Ne 2080.6
Ga 578.8	Ge 762.2	As 947	Se 194.97	Br 1139.9	Ar 1520.5
In 558.3	Sn 708.6	Sb 833.7	Te 190.15	I 1008.4	Kr 1350.7
Tl 589.3	Pb 715.5	Bi 703.3	Po ˜180	At ˜930	Xe 1170.4

 

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Relevant Posts

Electronegativities Periodic Table of the Elements

 

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References

1. CRC Handbook of Chemistry and Physics, 52nd edition, The Chemical Rubber Co., (1971)
2. David W. Oxtoby, H.P. Gillis, Alan Campion, “Principles of Modern Chemistry”, Sixth Edition, Thomson Brooks/Cole, 2008
3. Steven S. Zumdahl, “Chemical Principles”  6th Edition, Houghton Mifflin Company, 2009

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Key Terms

electron affinities, electronegativity difference, electron affinity, ionization energy,

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