1A

8A

1

2

1

H

He

1.008

2A

3A

4A

5A

6A

7A

4.003

3

4

5

6

7

8

9

10

2

Li

Be

Names

Electronegativities

B

C

N

O

F

Ne

6.941

9.012

10.81

12.01

14.01

16.00

19.00

20.18

11

12

Masses

Oxidation state

13

14

15

16

17

18

3

Na

Mg

Al

Si

P

S

Cl

Ar

22.99

24.31

3B

4B

5B

6B

7B

8B

9B

10B

1B

2B

26.98

28.09

30.97

32.07

35.45

39.95

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

4

K

Ca

Sc

Ti

V

Cr

Mn

Fe

Co

Ni

Cu

Zn

Ga

Ge

As

Se

Br

Kr

39.10

40.08

44.96

47.87

50.94

52.00

54.94

55.85

58.93

58.69

63.55

65.39

69.72

72.61

74.92

78.96

79.90

83.80

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

5

Rb

Sr

Y

Zr

Nb

Mo

Tc

Ru

Rh

Pd

Ag

Cd

In

Sn

Sb

Te

I

Xe

85.47

87.62

88.91

91.22

92.91

95.94

98.00

101.1

102.9

106.4

107.9

112.4

114.8

118.7

121.8

127.6

126.9

131.3

55

56

57

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

6

Cs

Ba

La*

Hf

Ta

W

Re

Os

Ir

Pt

Au

Hg

Tl

Pb

Bi

Po

At

Rn

132.9

137.3

138.9

178.5

181.0

183.8

186.2

190.2

192.2

195.1

197.0

200.6

204.4

207.2

209.0

209.0

210.0

222.0

87

88

89

104

105

106

107

108

109

110

111

112

7

Fr

Ra

Acª

Rf

Db

Sg

Bh

Hs

Mt

Uun

Uuu

Uub

 = metalloid

223.0

226.0

227.0

261.0

262.0

263.0

262.0

265.0

266.0

269.0

272.0

277.0

58

59

60

61

62

63

64

65

66

67

68

69

70

71

*Lanthanides

Ce

Pr

Nd

Pm

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

140

141

144

145

150

152

157

159

163

165

167

169

173

175

90

91

92

93

94

95

96

97

98

99

100

101

102

103

ªActinides

Th

Pa

U

Np

Pu

Am

Cm

Bk

Cf

Es

Fm

Md

No

Lr

232

231

238

237.1

244

243

247

247

251

252

257

258

259

260