Texas A&M University-Kingsville

chembanner21.jpg

Periodic Table of the Elements
Click on an Element to see a picture and a brief description.

Group

Period
1


2


3


4


5


6


7


8


9


10


11


12


13


14


15


16


17


18


1       1
H

1.008
2
He

4.003
2       3
Li

6.941
4
Be

9.012
5
B

10.8
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
13
Al

26.98
14
Si

28.09
15
P

30.97
16
S

32.07
17
Cl

35.45
18
Ar

39.95
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

58.93
28
Ni

58.69
29
Cu

63.55
30
Zn

65.41
31
Ga

69.72
32
Ge

72.61
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

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)
7       87
Fr

(223)
88
Ra

(226)
89
Ac

(227)
104
Rf

(263)
105
Db

(262)
106
Sg

(266)
107
Bh

(267)
108
Hs

(277)
109
Mt

(268)
110
Ds

(281)
111
Rg

(272)
112
Cn

(285)
113

(284)
114

(289)
115

(288)
116

(292)


118

(294)
  Non-metals
  Metaloids
  Metals
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
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)

This page was last updated on: September 17, 2012