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Periodic Table of the Elements (showing atomic number and atomic symbol; click on atomic symbol for more detailed information)

Groups                 
123456789101112131415161718
1H                2He
3Li4Be          5B6C7N8O9F10Ne
11Na12Mg          13Al14Si15P16S17Cl18Ar
19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr
37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe
55Cs56Ba57–71Lanthanide Series72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn
87Fr88Ra89–103Actinide Series104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Uub113Uut114Uuq115Uup116Uuh 118Uuo

Lanthanide Series (Rare Earth Elements)

57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu

Actinide Series (Radioactive Rare Earth Elements)

89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr
periodic table

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

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