Periodic Table of the Elements

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MAIN-GROUP
ELEMENTS

	Metals (main-group)
	Metals (transition)
	Metals (inner transition)
	Metalloids
	Nonmetals

MAIN-GROUP
ELEMENTS

1A
(1)

8A
(18)

1
H
1.008

2A
(2)

3A
(13)

4A
(14)

5A
(15)

6A
(16)

7A
(17)

2
He
4.003

3
Li
6.941

4
Be
9.012

TRANSITION ELEMENTS

5
B
10.81

6
C
12.01

7
N
14.01

8
O
16.00

9
F
19.00

10
Ne
20.18

11
Na
22.99

12
Mg
24.31

3B
(3)

4B
(4)

5B
(5)

6B
(6)

7B
(7)

_/^_______ 8B ^________\
(8)	(9)	(10)

1B
(11)

2B
(12)

13
Al
26.98

14
Si
28.09

15
P
30.97

16
S
32.07

17
Cl
35.45

18
Ar
39.95

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
58.93

28
Ni
58.69

29
Cu
63.55

30
Zn
65.39

31
Ga
69.72

32
Ge
72.61

33
As
74.92

34
Se
78.96

35
Br
79.90

36
Kr
83.80

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

55
Cs
132.9

56
Ba
137.3

57 La 138.9		72 Hf 178.5
89 Ac (227)		104 Rf (261)

73
Ta
180.9

74
W
183.9

75
Re
186.2

76
Os
190.2

77
Ir
192.2

78
Pt
195.1

79
Au
197.0

80
Hg
200.6

81
Tl
204.4

82
Pb
207.2

83
Bi
209.0

84
Po
(209)

85
At
(210)

86
Rn
(222)

87
Fr
(223)

88
Ra
(226)

105
Db
(262)

106
Sg
(266)

107
Bh
(262)

108
Hs
(265)

109
Mt
(266)

110
Uun
(269)

111
Uuu
(272)

112
Uub
(277)

INNER TRANSITION ELEMENTS
	6	Lanthanides	58 Ce 140.1	59 Pr 140.9	60 Nd 144.2	61 Pm (145)	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
	7	Actinides	90 Th 232.0	91 Pa (231)	92 U 238.0	93 Np (237)	94 Pu (242)	95 Am (243)	96 Cm (247)	97 Bk (247)	98 Cf (251)	99 Es (252)	100 Fm (257)	101 Md (258)	102 No (259)	103 Lr (260)