Encyclopedia of Chemistry

321

APPENDIX V

1

1.008

H

1

1.008

H

3

6.941

Li

11

22.99

Na

19

39.10

K

37

85.47

Rb

55

132.9

Cs

87

(223)

Fr

4

9.012

Be

12

24.31

Mg

20

40.08

Ca

38

87.62

Sr

56

137.3

Ba

88

(226)

Ra

58

140.1

Ce

90

232.0

Th

21

44.96

Sc

39

88.91

Y

57-71*

89-103‡

57

138.9

La

89

(227)

Ac

59

140.9

Pr

91

231.0

Pa

22

47.88

Ti

40

91.22

Zr

72

178.5

Hf

104

(261)

Rf

60

144.2

Nd

92

238.0

U

23

50.94

V

41

92.91

Nb

73

180.9

Ta

105

(262)

Db

61

(145)

Pm

93

(237)

Np

24

52.00

Cr

42

95.94

Mo

74

183.9

W

106

(263)

Sg

62

150.4

Sm

94

(244)

Pu

25

54.94

Mn

43

(98)

Tc

75

186.2

Re

107

(262)

Bh

63

152.0

Eu

95

(243)

Am

26

55.85

Fe

44

101.1

Ru

76

190.2

Os

108

(265)

Hs

64

157.3

Gd

96

(247)

Cm

27

58.93

Co

45

102.9

Rh

77

192.2

Ir

109

(266)

Mt

110

(271)

Ds

111

(272)

Uuu

112

(285)

Uub

113

(284)

Uut

114

(289)

Uuq

115

(288)

Uup

65

158.9

Tb

97

(247)

Bk

28

58.69

Ni

46

106.4

Pd

78

195.1

Pt

66

162.5

Dy

98

(251)

Cf

29

63.55

Cu

47

107.9

Ag

79

197.0

Au

67

164.9

Ho

99

(252)

Es

30

65.39

Zn

48

112.4

Cd

80

200.6

Hg

5

10.81

B

13

26.98

Al

31

69.72

Ga

49

114.8

In

81

204.4

Tl

6

12.01

C

14

28.09

Si

32

72.59

Ge

50

118.7

Sn

82

207.2

Pb

7

14.01

N

15

30.97

P

33

74.92

As

51

121.8

Sb

83

209.0

Bi

68

167.3

Er

8

16.00

O

16

32.07

S

34

78.96

Se

52

127.6

Te

84

(210)

Po

69

168.9

Tm

9

19.00

F

17

35.45

Cl

35

79.90

Br

53

126.9

I

85

(210)

At

70

173.0

Yb

2

4.003

He

10

20.18

Ne

18

39.95

Ar

36

83.80

Kr

54

131.3

Xe

86

(222)

Rn

71

175.0

Lu

100

(257)

Fm

101

(258)

Md

102

(259)

No

103

(260)

Lr

atomic number

atomic weight

symbol

*lanthanide

series

‡actinide

series

Numbers in parentheses are the

atomic mass numbers of radioactive isotopes.

Periodic Table of Elements