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Periodic Table of Elements
Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
  1A 2A 3B 4B 5B 6B 7B 8B 1B 2B 3A 4A 5A 6A 7A 8A
PeriodThe Interactive Periodic Table of Elements
1 1
H		 Click on an element to view more details (under the table). 2
He
2 3
Li		 4
Be		 Brought to you by the CRC 5
B		 6
C		 7
N		 8
O		 9
F		 10
Ne
3 11
Na		 12
Mg		 JavaScript written by Ben Dekarske 13
Al		 14
Si		 15
P		 16
S		 17
Cl		 18
Ar
4 19
K		 20
Ca		 21
Sc		 22
Ti		 23
V		 24
Cr		 25
Mn		 26
Fe		 27
Co		 28
Ni		 29
Cu		 30
Zn		 31
Ga		 32
Ge		 33
As		 34
Se		 35
Br		 36
Kr
5 37
Rb		 38
Sr		 39
Y		 40
Zr		 41
Nb		 42
Mo		 43
Tc		 44
Ru		 45
Rh		 46
Pd		 47
Ag		 48
Cd		 49
In		 50
Sn		 51
Sb		 52
Te		 53
I		 54
Xe
6 55
Cs		 56
Ba		 57
La		 72
Hf		 73
Ta		 74
W		 75
Re		 76
Os		 77
Ir		 78
Pt		 79
Au		 80
Hg		 81
Tl		 82
Pb		 83
Bi		 84
Po		 85
At		 86
Rn
7 87
Fr		 88
Ra		 89
Ac		 104
Rf		 105
Ha		 106
Sg		 107
Ns		 108
Hs		 109
Mt		 110
 		 111
 		 112
 		  
Metals  
Metalloids Lanthanides 58
Ce		 59
Pr		 60
Nd		 61
Pm		 62
Sm		 63
Eu		 64
Gd		 65
Tb		 66
Dy		 67
Ho		 68
Er		 69
Tm		 70
Yb		 71
Lu
Nonmetals Actinides 90
Th		 91
Pa		 92
U		 93
Np		 94
Pu		 95
Am		 96
Cm		 97
Bk		 98
Cf		 99
Es		 100
Fm		 101
Md		 102
No		 103
Lr

Element:
Atomic Number:
Atomic Weight:
The 1-18 group designation has been recommended by the International Union of Pure and Applied Chemistry (IUPAC) but is not yet in wide use. The names for elements 104-109 are controversial. No names have been assigned for elements 110-112.
All atomic masses have four significant figures. These values are recommended by the Committee on Teaching of Chemistry and IUPAC. Approximate values of atomic masses for radioactive elements are given in parentheses.