Atoms and Molecules
141
Table 5.2 Periodic table of elements (deviations from the shown shell structure are indicated by encircling the elements).
IA
IIA
1s
H
1
3
He
2
2s
Li
Be
4
3s
11
Na
12
Mg
4s
19
K
20
Ca
37
38
5s
Rb
Sr
6s
55
Cs
56
Ba
7s
87
Fr
88
Ra
1
2
IIIA IVA
VA VIA
VIIA
IB
VIIIA
IIB
3d
4d
5d
6d
21
Sc
22
Ti
V
23
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
1
2
3
4
5
6
7
8
9
1 0
IIIB IVB VB
VIB VIIB VIIIB
2p
5
B
6
C
7
N
8
O
9
F
10
Ne
3p
13
Al
14
Si
15
P
16
S
17
CI
18
Ar
4p
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5p
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6p
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
1
2
3
4
5
6
1
2
3
4
5
6
7
4f
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
8
9
10
11
12
13
14
68
Er
69
Tm
70
Yb