<page_title> Isotopes of dysprosium </page_title> <section_title> List of isotopes </section_title> <table> <cell> 154Dy <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 3.0(15)×106 y <col_header> half-life </col_header> </cell> <cell> 159Dy <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 144.4(2) d <col_header> half-life </col_header> </cell> <cell> 166Dy <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 81.6(1) h <col_header> half-life </col_header> </cell> </table>
Isotope ¹⁵⁴Dy has a half-life of 3.0 million years, ¹⁵⁹Dy has a half-life of 144.4 days, and ¹⁶⁶Dy with a half-life of 81.6 hours.