IA IIA IIIA IVA VA VIA VIIA VIII IB IIB IIIB IVB VB VIB VIIB 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
H
(1s)1
+0.754
13.60
-
-
32
2
He
(1s)2
-0.5
24.59
54.51
-
31
2 3
Li
[He](2s)1
+0.618
5.320
75.63
122.4
123
4
Be
[He](2s)2
-0.5
9.321
18.21
153.9
89
n
symbol
configuration
electron affinity(eV)
first ionization potential(eV)
second ionization potential(eV)
third ionization potential(eV)
atomic radius(pm)
5
B
[He](2s)2(2p)1
+0.277
8.297
25.15
37.93
82
6
C
[He](2s)2(2p)2
+1.263
11.257
24.38
47.88
77
7
N
[He](2s)2(2p)3
-0.07
14.53
29.60
47.44
75
8
O
[He](2s)2(2p)4
+1.461
13.62
35.11
54.93
73
9
F
[He](2s)2(2p)5
+3.399
17.42
34.97
62.70
72
10
Ne
[He](2s)2(2p)6
-1.2
21.56
40.96
63.45
71
3 11
Na
[Ne](3s)1
+0.548
5.138
47.28
71.63
154
12
Mg
[Ne](3s)2
-0.4
7.642
15.03
80.14
136
13
Al
[Ne](3s)2(3p)1
+0.441
5.984
18.83
28.44
118
14
Si
[Ne](3s)2(3p)2
+1.385
8.151
16.34
33.49
111
15
P
[Ne](3s)2(3p)3
+0.747
10.485
19.72
30.18
106
16
S
[Ne](3s)2(3p)4
+2.077
10.360
23.33
34.83
102
17
Cl
[Ne](3s)2(3p)5
+3.617
12.966
23.80
39.65
99
18
Ar
[Ne](3s)2(3p)6
-1.0
15.76
27.62
40.71
98
4 19
K
[Ar](4s)1
+0.502
4.340
31.62
45.71
203
20
Ca
[Ar](4s)2
-0.3
6.111
11.87
50.89
174
21
Sc
[Ar](3d)1(4s)2
+0.188
6.54
12.80
24.76
144
22
Ti
[Ar](3d)2(4s)2
+0.079
6.82
13.58
27.48
132
23
V
[Ar](3d)3(4s)2
+0.525
6.74
14.65
29.31
122
24
Cr
[Ar](3d)5(4s)1
+0.666
6.764
16.50
30.96
118
25
Mn
[Ar](3d)5(4s)2
<0
7.435
15.64
33.67
117
26
Fe
[Ar](3d)6(4s)2
+0.163
7.869
16.18
30.65
117
27
Co
[Ar](3d)7(4s)2
+0.661
7.876
17.06
33.50
116
28
Ni
[Ar](3d)8(4s)2
+1.156
7.635
18.17
35.16
115
29
Cu
[Ar](3d)10(4s)1
+1.228
7.725
20.29
36.84
117
30
Zn
[Ar](3d)10(4s)2
<0
9.393
17.96
39.72
125
31
Ga
[Ar](3d)10(4s)2(4p)1
+0.30
5.998
20.51
30.71
126
32
Ge
[Ar](3d)10(4s)2(4p)2
+1.2
7.898
15.93
34.22
122
33
As
[Ar](3d)10(4s)2(4p)3
+0.81
9.814
18.63
28.34
120
34
Se
[Ar](3d)10(4s)2(4p)4
+2.021
9.751
21.18
30.82
117
35
Br
[Ar](3d)10(4s)2(4p)5
+3.365
11.814
21.80
36.27
114
36
Kr
[Ar](3d)10(4s)2(4p)6
-1.0
13.998
24.35
36.95
112
5 37
Rb
[Kr](5s)1
+0.486
4.177
27.28
40.42
216
38
Sr
[Kr](5s)2
-0.3
5.695
11.03
43.63
191
39
Y
[Kr](4d)1(5s)2
+0.307
6.38
12.24
20.52
162
40
Zr
[Kr](4d)2(5s)2
+0.426
6.84
13.13
22.99
145
41
Nb
[Kr](4d)4(5s)1
+0.893
6.88
14.32
25.04
134
42
Mo
[Kr](4d)5(5s)1
+0.746
7.099
16.15
27.16
130
43
Tc
[Kr](4d)5(5s)2
+0.55
7.28
15.25
29.54
127
44
Ru
[Kr](4d)7(5s)1
+1.05
7.37
16.76
28.47
125
45
Rh
[Kr](4d)8(5s)1
+1.137
7.46
18.07
31.06
125
46
Pd
[Kr](4d)10
+0.557
8.34
19.43
32.92
128
47
Ag
[Kr](4d)10(5s)1
+1.302
7.576
21.48
34.83
134
48
Cd
[Kr](4d)10(5s)2
<0
8.992
16.90
37.47
148
49
In
[Kr](4d)10(5s)2(5p)1
+0.3
5.786
18.87
28.02
144
50
Sn
[Kr](4d)10(5s)2(5p)2
+1.2
7.344
14.63
30.50
140
51
Sb
[Kr](4d)10(5s)2(5p)3
+1.07
8.640
18.59
25.32
140
52
Te
[Kr](4d)10(5s)2(5p)4
+1.971
9.008
18.60
27.96
136
53
I
[Kr](4d)10(5s)2(5p)5
+3.059
10.45
19.13
33.16
133
54
Xe
[Kr](4d)10(5s)2(5p)6
-0.8
12.130
21.20
32.10
131
6 55
Cs
[Xe](6s)1
+0.472
3.894
25.08
35.24
235
56
Ba
[Xe](6s)2
<0
5.211
10.00
37.51
198
57-71
-
*
72
Hf
[Xe](4f)14(5d)2(6s)2
Å0
6.65
14.92
23.32
144
73
Ta
[Xe](4f)14(5d)3(6s)2
+0.322
7.89
15.55
21.76
134
74
W
[Xe](4f)14(5d)4(6s)2
+0.815
7.89
17.62
23.84
130
75
Re
[Xe](4f)14(5d)5(6s)2
+0.15
7.88
13.06
26.01
128
76
Os
[Xe](4f)14(5d)6(6s)2
+1.1
8.71
16.58
24.87
126
77
Ir
[Xe](4f)14(5d)7(6s)2
+1.565
9.12
17.41
26.95
127
78
Pt
[Xe](4f)14(5d)9(6s)1
+2.128
9.02
18.56
29.02
130
79
Au
[Xe](4f)14(5d)10(6s)1
+2.309
9.22
20.52
30.05
134
80
Hg
[Xe](4f)14(5d)10(6s)2
<0
10.44
18.76
34.20
149
81
Tl
[Xe](4f)14(5d)10(6s)2(6p)1
+0.2
6.107
20.43
29.83
148
82
Pb
[Xe](4f)14(5d)10(6s)2(6p)2
+0.364
7.415
15.03
31.94
147
83
Bi
[Xe](4f)14(5d)10(6s)2(6p)3
+0.946
7.289
16.69
25.56
146
84
Po
[Xe](4f)14(5d)10(6s)2(6p)4
+1.9
8.42
18.66
27.98
146
85
At
[Xe](4f)14(5d)10(6s)2(6p)5
+2.8
9.64
16.58
30.06
145
86
Rn
[Xe](4f)14(5d)10(6s)2(6p)6
<0
10.75
-
-
-
7 87
Fr
[Rn](7s)1
+0.46
4.15
21.76
32.13
88
Ra
[Rn](7s)2
-
5.278
10.15
34.20
220
89-103
-
**
104
Rf
[Rn](5f)14(6d)2(7s)2
-
-
-
-
-
105
Db
[Rn](5f)14(6d)3(7s)2
-
-
-
-
-
106
Sg
[Rn](5f)14(6d)4(7s)2
-
-
-
-
-
107
Bh
[Rn](5f)14(6d)5(7s)2
-
-
-
-
-
108
Hs
[Rn](5f)14(6d)6(7s)2
-
-
-
-
-
109
Mt
[Rn](5f)14(6d)7(7s)2
-
-
-
-
-
* Lanthanide
** Actinide
* 57
La
[Xe](5d)1(6s)2
+0.5
5.577
11.06
19.17
169
58
Ce
[Xe](4f)1(5d)1(6s)2
-
5.466
10.85
20.20
165
59
Pr
[Xe](4f)3(6s)2
-
5.421
10.55
21.62
164
60
Nd
[Xe](4f)4(6s)2
-
5.489
10.73
20.07
164
61
Pm
[Xe](4f)5(6s)2
-
5.554
10.90
22.28
163
62
Sm
[Xe](4f)6(6s)2
-
5.631
11.07
23.42
162
63
Eu
[Xe](4f)7(6s)2
-
5.666
11.24
24.91
185
64
Gd
[Xe](4f)7(5d)1(6s)2
-
6.140
12.09
20.62
162
65
Tb
[Xe](4f)9(6s)2
-
5.851
11.52
21.91
161
66
Dy
[Xe](4f)10(6s)2
-
5.927
11.67
22.80
160
67
Ho
[Xe](4f)11(6s)2
-
6.018
11.80
22.84
158
68
Er
[Xe](4f)12(6s)2
-
6.101
11.93
22.74
158
69
Tm
[Xe](4f)13(6s)2
-
6.184
12.05
23.68
158
70
Yb
[Xe](4f)14(6s)2
-
6.254
12.19
25.03
170
71
Lu
[Xe](4f)14(5d)1(6s)2
-
5.425
13.89
20.93
156
** 89
Ac
[Rn](6d)1(7s)2
-
5.17
11.87
19.69
200
90
Th
[Rn](6d)2(7s)2
-
6.08
11.89
20.50
165
91
Pa
[Rn](5f)2(6d)1(7s)2
-
5.89
11.7
18.8
-
92
U
[Rn](5f)3(6d)1(7s)2
-
6.19
14.9
19.1
142
93
Np
[Rn](5f)4(6d)1(7s)2
-
6.27
11.7
19.4
-
94
Pu
[Rn](5f)6(7s)2
-
6.06
11.7
21.8
-
95
Am
[Rn](5f)7(7s)2
-
5.99
12.0
22.4
-
96
Cm
[Rn](5f)7(6d)1(7s)2
-
6.02
12.4
21.2
-
97
Bk
[Rn](5f)9(7s)2
-
6.23
12.3
22.3
-
98
Cf
[Rn](5f)10(7s)2
-
6.30
12.5
23.6
-
99
Es
[Rn](5f)11(7s)2
-
6.42
12.6
24.1
-
100
Fm
[Rn](5f)12(7s)2
-
6.50
12.7
24.4
-
101
Md
[Rn](5f)13(7s)2
-
6.58
12.8
25.4
-
102
No
[Rn](5f)14(7s)2
-
6.65
13.0
27.0
-
103
Lr
[Rn](5f)14(6d)1(7s)2
-
4.6
14.8
23.0
-