Environmental Engineering Reference
In-Depth Information
Ta b l e B . 2
Electron affinities (EA) of atoms. Here EA is the electron binding energy of the nega-
tive ion, whose electron state is marked; “not” means that the the electron affinity of the atom is
not a positive value.
Ion
EA, eV
Ion
EA, eV
Ion
EA, eV
Ion
EA, eV
H
(
1
S
)
S
(
2
P
)
Se
(
2
P
)
I
(
1
S
)
0.75416
2.0771
2.0207
3.0590
Cl
(
1
S
)
Br
(
1
S
)
He
Not
3.6127
3.3636
Xe
Not
Li
(
1
S
)
Cs
(
1
S
)
0.618
Ar
Not
Kr
Not
0.4716
K
(
1
S
)
Rb
(
1
S
)
Be
Not
0.5015
0.4859
Ba
Not
B
(
3
P
) .8 a
(
2
P
)
Sr
(
2
P
)
La
(
3
F
) .5
0.018
0.026
C
(
4
S
)
Sc
(
1
D
) .9 r
(
4
F
) .3 f
1.2629
Not
C
(
2
D
)
Ti
(
4
F
) .8 b
(
5
D
) .9 a
(
5
D
) .2
0.035
V
(
5
D
) .3 o
(
6
S
) .5 W
(
6
S
)
N
Not
0.816
O
(
2
P
)
Cr
(
6
S
) .7 c
(
5
D
) .0 e
(
5
D
) .5
1.4611
F
(
1
S
)
Ru
(
4
F
) .5 s
(
4
F
) .4
3.4012
Mn
Not
Ne
Fe
(
4
F
)
Rh
(
3
F
) .4 Ir
(
3
F
) .7
Not
0.151
Na
(
1
S
)
Co
(
3
F
)
Pd
(
2
D
) .6 t
(
2
D
)
0.5479
0.662
2.128
Mg
Ni
(
2
D
) .5 g
(
1
S
) .0 u
(
1
S
)
Not
2.3086
Al
(
3
P
)
Cu
(
1
S
) .3 d
Hg
0.441
Not
Not
Si
(
4
S
)
Zn
In
(
3
P
) .3 l
(
3
P
) .5
1.394
Not
Si
(
2
D
)
Ga
(
2
P
) .5 n
(
4
S
)
Pb
(
4
S
)
0.526
1.112
0.364
Si
(
2
P
)
Ge
(
4
S
)
Sb
(
3
P
) .5 i
(
3
P
) .5
0.034
1.233
P
(
3
P
)
As
(
3
P
) .0 e
(
2
P
)
Po
(
2
P
) .6
0.7465
1.9708
