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This is the online scientific reference and dictionary of the elements. The elements are arranged in the standard periodic table format as shown below. Click on the elements to reveal their properties, uses and history.

1A

2A

3B

4B

5B

6B

7B

8

8

8

1B

2B

3A

4A

5A

6A

7A

O

1

1
H

2
He

2

3
Li

4
Be

5
B

6
C

7
N

8
O

9
F

10
Ne

3

11
Na

12
Mg

13
Al

14
Si

15
P

16
S

17
Cl

18
Ar

4

19
K

20
Ca

21
Sc

22
Ti

23
V

24
Cr

25
Mn

26
Fe

27
Co

28
Ni

29
Cu

30
Zn

31
Ga

32
Ge

33
As

34
Se

35
Br

36
Kr

5

37
Rb

38
Sr

39
Y

40
Zr

41
Nb

42
Mo

43
Tc

44
Ru

45
Rh

46
Pd

47
Ag

48
Cd

49
In

50
Sn

51
Sb

52
Te

53
I

54
Xe

6

55
Cs

56
Ba

+

72
Hf

73
Ta

74
W

75
Re

76
Os

77
Ir

78
Pt

79
Au

80
Hg

81
Tl

82
Pb

83
Bi

84
Po

85
At

86
Rn

7

87
Fr

88
Ra

*

104
Rf

105
Db

106
Sg

107
Bh

108
Hs

109
Mt

110
Ds


+ Lanthanide:

57
La

58
Ce

59
Pr

60
Nd

61
Pm

62
Sm

63
Eu

64
Gd

65
Tb

66
Dy

67
Ho

68
Er

69
Tm

70
Yb

71
Lu

* Actinide:

89
Ac

90
Th

91
Pa

92
U

93
Np

94
Pu

95
Am

96
Cm

97
Bk

98
Cf

99
Es

100
Fm

101
Md

102
No

103
Lr



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(The atomic number, element name and symbol will always be shown.)
(Data that are not available will not be sorted.)

Note:

  • The version of the periodic table is based on the recommendation of the Commission on the Nomenclature of Inorganic Chemistry1.

  • The atomic weights were taken from the agreement published2 in 2001.

  • While there are many isotopes had been detected in experiment, only the natural occurring isotopes for a given element are listed.

References:

  1. G.J. Leigh (ed.), Nomenclature of Inorganic Chemistry, Recommendation 1990, Blackwell Scientific Publications (1990)

  2. Pure & Appl. Chem., 73, 667 (2001); Chem. Internat., 23, 179 (2001)

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