spacer spacer Go to Kaye and Laby Home spacer
spacer
spacer spacer spacer
spacer
spacer
spacer
spacer spacer

You are here:

spacer

Chapter: 4 Atomic and nuclear physics
    Section: 4.1 Electrons in atoms
        SubSection: 4.1.2 Ionization potentials

spacer
spacer

spacer

« Previous Subsection

Next Subsection »

Unless otherwise stated this page contains Version 1.0 content (Read more about versions)

4.1.2    lonization potentials

The ionization potential is the least energy, expressed in electron volts, which is necessary to remove an electron from a free unexcited neutral atom (or additional electron from an ionized atom). It can be determined either directly from the speed of the slowest electrons which will ionize the atom by collision, or more accurately from the limit of a spectroscopic series.


Ionization potentials
(eV)

                         

H

13.598

   Ne

21.56

  

    K

4.34

  Ni+

18.15

  Tc

7.28

  Ba+

10.00

He

24.587

   Ne+

41.08

    K+

31.71

  Ni2+

35.20

  Ru

7.36

  La

5.61

He+

54.42

   Ne2+

63.45

  

    Ca

6.11

  Cu

7.72

  Rh

7.46

  Ta

7.88

Li

5.39

   Na

5.14

  

    Ca+

11.87

  Zn

9.39

  Pd

8.33

  W

7.98

Li+

75.60

   Na+

47.30

  

    Sc

6.54

  Ga

6.00

  Ag

7.57

  Re

7.87

Be

9.32

   Mg

7.65

  

    Ti

6.82

  Ge

7.88

  Cd

8.99

  Os

8.70

B

8.30

   Mg+

15.04

  

    V

6.74

  As

9.81

  In

5.79

  Pt

9.00

C

11.26

   Al

5.99

  

    Cr

6.77

  Se

9.75

  Sn

7.34

  Au

9.22

C+

24.38

   Al+

18.83

  

    Mn

7.43

  Br

10.56

  Sb

8.64

  Hg

10.43

C2+

47.88

   Si

8.15

  

    Fe

7.87

  Kr

14.00

  Te

9.01

  Tl

6.11

N

14.53

   P

10.49

  

    Fe+

16.18

  Rb

4.18

  I

10.45

  Pb

7.42

N+

29.60

   S

10.36

  

    Fe2+

30.65

  Sr

5.69

  Xe

12.13

  Ra

5.28

N2+

47.44

   S+

23.41

  

    Co

7.86

  Y

6.25

  Xe+

23.39

  Th

7.50

O

13.62

   Cl

12.97

  

    Co+

17.06

  Zr

6.95

  Cs

3.89

  U

6.19

O+

35.12

   A

15.75

  

    Co2+

33.50

  Nb

6.77

  Cs+

25.10

  Np

6.16

O2+

54.90

   A+

27.63

  

    Ni

7.64

  Mo

7.06

  Ba

5.21

  Pu

5.71

F

17.42

 

 

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
                         

References

W. Lotz (1967), J. Opt. Soc. Am., 57, 873.
Handbook of Physics, 1967, 2nd edn.
J. Chem. Phys., 1969, 51, 3105.

J.C. Rivière/M.P. Seah

spacer


spacer
spacer
spacer spacer spacer

Home | About | Table of Contents | Advanced Search | Copyright | Feedback | Privacy | ^ Top of Page ^

spacer

This site is hosted and maintained by the National Physical Laboratory © 2017.

spacer