<page_title> Isotopes of silicon </page_title> <section_title> List of isotopes </section_title> <table> <cell> 31Si <col_header> nuclide symbol </col_header> </cell> <cell> 157.3(3) min <col_header> half-life </col_header> </cell> <cell> 32Si <col_header> nuclide symbol </col_header> </cell> </table>
After ³²Si, ³¹Si has the second longest half-life at 157.3 minutes.