det periodiske system
hejsa!
kør musen over for at se

1

H

3

Li

11

Na

19

K

37

Rb

55

Cs

87

Fr

4

Be

12

Mg

20

Ca

38

Sr

56

Ba

88

Ra

21

Sc

39

Y

57-71

La-Lu

89-103

Ac-Lr

22

Ti

40

Zr

72

Hf

104

Rf

23

V

41

Nb

73

Ta

105

Db

24

Cr

42

Mo

74

W

106

Sg

25

Mn

43

Tc

75

Re

107

Bh

26

Fe

44

Ru

76

Os

108

Hs

27

Co

45

Rh

77

Ir

109

Mt

28

Ni

46

Pd

78

pt

110

Ds

29

Cu

47

Ag

79

Au

111

Rg

30

Zn

48

Cd

80

Hg

112

Cn

5

B

13

Al

31

Ga

49

In

81

Ti

113

Uut

6

C

14

Si

32

Ge

50

Sn

82

Rb

114

Fl

7

N

15

P

33

As

51

Sb

83

Bi

115

Uup

8

O

16

S

34

52

Te

84

Po

116

Lv

9

F

17

Cl

35

Br

53

I

85

At

117

Uus

2

He

10

Ne

18

Ar

36

Kr

54

Xe

86

Rn

108

Uuo
La
Ac
Ce
Th
Pr
Pa
Nd
U
Pm
Np
Sm
Pu
Eu
Am
Gd
Cm
Tb
Bk
Dy
Cf
Ho
Es
Er
Fm
Tm
Md
Yb
No
Lu
Lr