Electron affinity

THe electron affinity is the nergy required to detach an electron from the singly charged negative ion (energy for the process X -> X + e). The equivalent more common definition is the energy released (Einitial + Efinal) when an additional electron is attached to a neutral atom or molecule IUPAC Compendium of Chemical Terminology (Gold Book), 2nd Edition (1997)]. To convert these values to kJ mol-1 multiply by 96.485

Values in eV are from reference 4 (not converted from the values in kJ mol -1. The numbwers in (parentheses) after the eV values represent the estimated standard deviation on the given value.

Image showing periodicity of the chemical elements for electron affinity in a periodic table cityscape style.
Image showing periodicity of the chemical elements for electron affinity in a periodic table cityscape style.
Image showing periodicity of the chemical elements for electron affinity in a periodic table heatscape style.
Image showing periodicity of the chemical elements for electron affinity in a periodic table heatscape style.
Image showing periodicity of the chemical elements for electron affinity in a spiral periodic table heatscape style.
Image showing periodicity of the chemical elements for electron affinity in a spiral periodic table heatscape style.
Image showing periodicity of the chemical elements for electron affinity in a 3D spiral periodic table column style.
Image showing periodicity of the chemical elements for electron affinity in a 3D spiral periodic table column style.
Image showing periodicity of the chemical elements for electron affinity in a 3D periodic table column style.
Image showing periodicity of the chemical elements for electron affinity in a 3D periodic table column style.

Units

kJ mol-1

Notes

None

Literature sources

  1. J.E. Huheey, E.A. Keiter, and R.L. Keiter in Inorganic Chemistry: Principles of Structure and Reactivity, 4th edition, HarperCollins, New York, USA, 1993.
  2. A.M. James and M.P. Lord in Macmillan's Chemical and Physical Data, Macmillan, London, UK, 1992.
  3. J.C. Wheeler in J. Chem. Ed., 1997, 74, 123-127.
  4. T. Andersen, H. K. Haugen, and H. Hotop, "Binding Energies in Atomic Negative Ions: III", J. Phys. Chem. Ref. Data, 1999, 28, 1511-1533.
Explore the element of your choice through this periodic table.
1 2   3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1
H
2
He
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
55
Cs
56
Ba
 *
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
87
Fr
88
Ra
 **
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
 
*Lanthanoids *
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
**Actinoids **
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No