Periodic table (electron configurations)

From Academic Kids

Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

IA IIA IIIB IVB VB VIB VIIB ---- VIIIB ---- IB IIB IIIA IVA VA VIA VIIA VIIIA
Period
1

1s
1
H
1

2
He
2
2
 
2s
2p
3
Li
1
 
4
Be
2


5
B
2
1
6
C
2
2
7
N
2
3
8
O
2
4
9
F
2
5
10
Ne
2
6
3
 
3s
3p
11
Na
1
 
12
Mg
2


13
Al
2
1
14
Si
2
2
15
P
2
3
16
S
2
4
17
Cl
2
5
18
Ar
2
6
4
 
4s
3d
4p
19
K
1
 
 
20
Ca
2
 
 
21
Sc
2
1
 
22
Ti
2
2
 
23
V
2
3
 
24
Cr
1
5
 
25
Mn
2
5
 
26
Fe
2
6
 
27
Co
2
7
 
28
Ni
2
8
 
29
Cu
1
10
 
30
Zn
2
10
 
31
Ga
2
10
1
32
Ge
2
10
2
33
As
2
10
3
34
Se
2
10
4
35
Br
2
10
5
36
Kr
2
10
6
5
 
5s
4d
5p
37
Rb
1
 
 
38
Sr
2
 
 
39
Y
2
1
 
40
Zr
2
2
 
41
Nb
1
4
 
42
Mo
2
4
 
(43)
Tc
2
5
 
44
Ru
2
6
 
45
Rh
2
7
 
46
Pd
0
10
 
47
Ag
1
10
 
48
Cd
2
10
 
49
In
2
10
1
50
Sn
2
10
2
51
Sb
2
10
3
52
Te
2
10
4
53
I
2
10
5
54
Xe
2
10
6
6
 
6s
4f
5d
6p
55
Cs
1
 
 
 
56
Ba
2
 
 
 
*
72
Hf
2
14
2
 
73
Ta
2
14
3
 
74
W
2
14
4
 
75
Re
2
14
5
 
76
Os
2
14
6
 
77
Ir
2
14
7
 
78
Pt
1
14
9
 
79
Au
1
14
10
 
80
Hg
2
14
10
 
81
Tl
2
14
10
1
82
Pb
2
14
10
2
83
Bi
2
14
10
3
84
Po
2
14
10
4
85
At
2
14
10
5
86
Rn
2
14
10
6
7
 
7s
5f
6d
7p
87
Fr
1
 
 
 
88
Ra
2
 
 
 
**
(104)
Rf
2
14
2
 
(105)
Db
2
14
3
 
(106)
Sg
2
14
4
 
(107)
Bh
2
14
5
 
(108)
Hs
2
14
6
 
(109)
Mt
2
14
7
 
(110)
Ds
2
14
8
 
(111)
Rg
2
14
9
 
(112)
Uub
2
14
10
 
(113)
Uut
2
14
10
1
</font>
(114)
Uuq
2
14
10
2
(115)
Uup
2
14
10
3
</font>
(116)
Uuh
2
14
10
4
</font>
(117)
Uus
2
14
10
5
(118)
Uuo
2
14
10
6
* Lanthanides
 
6s
4f
5d
57
La
2
0
1
58
Ce
2
2
0
59
Pr
2
3
0
60
Nd
2
4
0
(61)
Pm
2
5
0
62
Sm
2
6
0
63
Eu
2
7
0
64
Gd
2
7
1
65
Tb
2
9
0
66
Dy
2
10
0
67
Ho
2
11
0
68
Er
2
12
0
69
Tm
2
13
0
70
Yb
2
14
0
71
Lu
2
14
1
** Actinides
 
7s
5f
6d
89
Ac
2
0
1
90
Th
2
0
2
91
Pa
2
2
1
92
U
2
3
1
(93)
Np
2
4
1
(94)
Pu
2
6
0
(95)
Am
2
7
0
(96)
Cm
2
7
1
(97)
Bk
2
9
0
(98)
Cf
2
10
0
(99)
Es
2
11
0
(100)
Fm
2
12
0
(101)
Md
2
13
0
(102)
No
2
14
0
(103)
Lr
2
14
1

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