<page_title> Isotopes of rhenium </page_title> <section_title> List of isotopes </section_title> <table> <cell> 184mRe <col_header> nuclide symbol </col_header> <col_header> excitation energy </col_header> </cell> <cell> 169(8) d <col_header> half-life </col_header> </cell> </table>
The ¹⁸⁴ᵐRe has a half-life of 169 days.