Knowledge
Periodic Table of the Elements

IA

ⅡA

ⅢB

IVB

VIB

VIIB

 

 

 

 

ⅡB

ⅢA

ⅣA

ⅣA

ⅥA

ⅦA

INERT GASES

1

H

1.00797

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

H

1.00797.

2

He

4.0026

3

Li

6.939

4

Be

9.0122

 

 

 

 

 

 

 

 

 

 

5

B

10.811

6

C

12.0112

7

N

14.0067

8

O

15.9994

9

F

18.9984

10

Ne

18.9984

11

Na

22.9898

12

Mg

24.312

 

 

 

 

 

 

 

 

 

 

13

AI

26.9815

14

Si

28.086

15

P

30.9738

16

S

32.064

17

CI

35.543

18

Ar

39.948

19

K

39.102

20

Ca

40.08

21

Sc

44.956

22

Ti

47.90

23

V

50.942

24

Cr

51.996

25

Mn

54.9380

26

Fe

55.847

27

Co

58.9332

28

Ni

58.71

29

Cu

63.54

30

Zn

65.37

31

Ga

69.72

32

Ge

72.59

33

As

74.9216

34

Se

78.96

35

Br

79.909

36

Kr

83.80

37

Rb

85.47

38

Sr

87.62

39

Y

88.905

40

Zr

91.22

41

Nb

92.906

42

Mo

95.94

43

Tc

(99)

44

Ru

101.07

45

Rh

102.905

46

Pd

106.4

47

Ag

107.870

48

Cd

112.40

49

In

114.82

50

Sn

118.69

51

Sb

121.75

52

Te

127.60

53

I

126.904

54

Xe

131.30

55

Cs

132.905

56

Ba

137.34

57

*La

138.91

72

Hf

178.49

73

Ta

180.948

74

W

183.85

75

Re

186.2

76

Os

190.2

77

lr

192.2

78

Pt

195.09

79

Au

196.967

80

Hg

200.59

81

TI

204.37  

82

Pb

207.19

83

Bi

208.980

84

Po

(210)

85

At

(210)

86

Ru

(222)

87

Fr

(223)

88

Ra

(226)

89

Ac

(227)

104

Rf

(261)

105

Db

(262)

106

Sg

(266)

107

Bh

(262)

108

H

(265)

109

Mt

(266)

1

 

(271)

111

 

(272)

112

 

(277)

 

 

 

 

 

 

*Lanthanide Series

 

 

58

Ce

140.12

59

Pr

140.907

60

Nd

144.24

61

Pm

(147)

62

Sm

150.35

63

Eu

151.96

64

Gd

157.25

65

Tb

158.924

66

Dy

162.50

67

Ho

164.930

68

Er

167.26

69

Tm

168.934

70

Yb

173.04

71

Lu

174.97

 

 

Actinide Series

 

 

90

Th

232.038

91

Pa

(231)

92

U

238.03

93

Np

(237)

94

Pu

(242)

95

Au

(243)

96

Cm

(247)

97

Bk

(247)

98

Cf

(249)

99

Es

(254)

100

Fm

(253)

101

Md

(256)

102

No

(256)

103

Lr

(257)

 


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