<page_title> Isotopes of gadolinium </page_title> <section_title> List of isotopes </section_title> <table> <cell> 150Gd <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 1.79(8)×106 y <col_header> half-life </col_header> </cell> <cell> α <col_header> decay mode(s) </col_header> </cell> <cell> 152Gd <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 1.08(8)×1014 y <col_header> half-life </col_header> </cell> <cell> α <col_header> decay mode(s) </col_header> </cell> </table>
The alpha-decaying isotopes are ¹⁵²Gd with a half-life of 1.08×10¹⁴ years and ¹⁵⁰Gd with a half-life of 1.79×10⁶ years.