氫、氦沒有電子排布簡式

3鋰 Li[He] 2s1

4鈹Be[He] 2s2

5硼B [He] 2s22p1

6碳C [He] 2s22p2

7氮N [He] 2s22p3

8氧O [He] 2s22p4

9氟 F[He] 2s22p5

10氖 Ne[He] 2s22p6

11鈉Na [Ne] 3s1

12鎂Mg [Ne] 3s2

13鋁Al [Ne] 3s23p1

14矽Si [Ne] 3s23p2

15磷P [Ne] 3s23p3

16硫S [Ne] 3s23p4

17氯Cl [Ne] 3s23p5

18氬Ar [Ne] 3s23p6

19鉀 K [Ar] 4s1

20鈣 Ca [Ar] 4s2

21鈧Sc [Ar] 3d1 4s2

22鈦Ti [Ar] 3d2 4s2

23 釩V [Ar] 3d3 4s2

24鉻Cr [Ar]3d54s1

25錳Mn [Ar] 3d5 4s2

26鐵Fe [Ar] 3d6 4s2

27鈷Co [Ar] 3d7 4s2

28Ni鎳 [Ar] 3d8 4s2

29銅Cu [Ar]3d104s1

30鋅 Zn [Ar] 3d10 4s2

31鎵Ga [Ar] 3d10 4s2 4p1

32鍺 Ge [Ar] 3d10 4s2 4p2

33砷As [Ar] 3d10 4s2 4p3

34硒 Se [Ar] 3d10 4s2 4p4

35溴 Br [Ar] 3d10 4s2 4p5

36氪Kr [Ar] 3d10 4s2 4p6