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Atomic no
Symbol of the element
Electronic configuration
1
H
1s1
2
He
1s2
3
Li
1s2 2s1
4
Be
1s22s2
5
B
1s22s2 2p1
6
C
1s22s2 2p2
7
N
1s22s22p3
8
O
1s22s22p4
9
F
1s22s22p5
10
Ne
1s22s22p6
11
Na
1s22s22p63s1
12
Mg
1s22s22p63s2
13
Al
1s22s22p63s23p1
14
Si
1s22s22p63s23p2
15
P
1s22s22p63s23p3
16
S
1s22s22p63s23p4
17
Cl
1s22s22p63s23p5
18
Ar
1s22s22p63s23p6
19
K
1s22s22p63s23p64s1
20
Ca
1s22s22p63s23p64s2
21
Sc
1s22s22p63s23p63d14s2
22
Ti
1s22s22p63s23p63d24s2
23
V
1s22s22p63s23p63d34s2
24
Cr
1s22s22p63s23p63d44s2
25
Mn
1s22s22p63s23p63d54s2
26
Fe
1s22s22p63s23p63d64s2
27
Co
1s22s22p63s23p63d74s2
28
Ni
1s22s22p63s23p63d84s2
29
Cu
1s22s22p63s23p63d104s2
30
Zn
31
Gq
[Ar]3d104s24p1
32
Ge
[Ar]3d104s24p2
33
As
[Ar]3d104s24p3
34
Se
[Ar]3d104s24p4
35
Br
[Ar]3d104s24p5
36
Kr
[Ar]3d104s24p6
37
Rb
[Kr]5s1
38
Sr
[Kr]5s2
39
Y
[Kr]4d15s2
40
Zr
[Kr]4d25s2
41
Nb
[Kr]4d45s1
42
Mo
[Kr]4d55s1
43
Tc
[Kr]4d55s2
44
Ru
[Kr]4d75s1
45
Rh
[Kr]4d85s1
46
Pd
[Kr]4d10
47
Ag
[Kr]4d105s1
48
Cd
[Kr]4d105s2
49
In
[Kr]4d105s25p1
50
Sn
[Kr]4d105s25p2