Periodic Table of the Elements

Period

Group**

1 IA 1A

18 VIIIA 8A

1

1 H 1.008

2 IIA 2A

13 IIIA 3A

14 IVA 4A

15 VA 5A

16 VIA 6A

17 VIIA 7A

2 He 4.003

2

3 Li 6.941

4 Be 9.012

5 B 10.81

6 C 12.01

7 N 14.01

8 O 16.00

9 F 19.00

10 Ne 20.18

3

11 Na 22.99

12 Mg 24.31

3 IIIB 3B

4 IVB 4B

5 VB 5B

6 VIB 6B

7 VIIB 7B

8

9

10

11 IB 1B

12 IIB 2B

13 Al 26.98

14 Si 28.09

15 P 30.97

16 S 32.07

17 Cl 35.45

18 Ar 39.95

------- VIII ------- ------- 8 -------

4

19 K 39.10

20 Ca 40.08

21 Sc 44.96

22 Ti 47.88

23 V 50.94

24 Cr 52.00

25 Mn 54.94

26 Fe 55.85

27 Co 58.47

28 Ni 58.69

29 Cu 63.55

30 Zn 65.39

31 Ga 69.72

32 Ge 72.59

33 As 74.92

34 Se 78.96

35 Br 79.90

36 Kr 83.80

5

37 Rb 85.47

38 Sr 87.62

39 Y 88.91

40 Zr 91.22

41 Nb 92.91

42 Mo 95.94

43 Tc (98)

44 Ru 101.1

45 Rh 102.9

46 Pd 106.4

47 Ag 107.9

48 Cd 112.4

49 In 114.8

50 Sn 118.7

51 Sb 121.8

52 Te 127.6

53 I 126.9

54 Xe 131.3

6

55 Cs 132.9

56 Ba 137.3

57 La* 138.9

72 Hf 178.5

73 Ta 180.9

74 W 183.9

75 Re 186.2

76 Os 190.2

77 Ir 190.2

78 Pt 195.1

79 Au 197.0

80 Hg 200.5

81 Tl 204.4

82 Pb 207.2

83 Bi 209.0

84 Po (210)

85 At (210)

86 Rn (222)

7

87 Fr (223)

88 Ra (226)

89 Ac~ (227)

104 Rf (257)

105 Db (260)

106 Sg (263)

107 Bh (262)

108 Hs (265)

109 Mt (266)

110 --- ()

111 --- ()

112 --- ()

114 --- ()

116 --- ()

118 --- ()

Lanthanide Series*

58 Ce 140.1

59 Pr 140.9

60 Nd 144.2

61 Pm (147)

62 Sm 150.4

63 Eu 152.0

64 Gd 157.3

65 Tb 158.9

66 Dy 162.5

67 Ho 164.9

68 Er 167.3

69 Tm 168.9

70 Yb 173.0

71 Lu 175.0

Actinide Series~

90 Th 232.0

91 Pa (231)

92 U (238)

93 Np (237)

94 Pu (242)

95 Am (243)

96 Cm (247)

97 Bk (247)

98 Cf (249)

99 Es (254)

100 Fm (253)

101 Md (256)

102 No (254)

103 Lr (257)