Periodic Table of the Elements
<break/><named-content content-type="headnote">(showing atomic number and atomic symbol; click on atomic symbol for more detailed information)</named-content>
<a href='/encyclopedia/science/chemistry/elements/lanthanide-series'>Lanthanide Series</a><break/><named-content content-type="headnote">(Rare Earth Elements)</named-content>
<a href='/encyclopedia/science/chemistry/elements/actinide-series'>Actinide Series</a><break/><named-content content-type="headnote">(Radioactive Rare Earth Elements)</named-content>
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