Ionization Energy Periodic Table of the Elements | Chemistry Net

Ionization Energy Periodic Table of the Elements

Ionization Energies 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

 



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

Key Terms

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


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