<page_title> Roentgenium </page_title> <section_title> Stability and half-lives </section_title> <table> <cell> 272Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 274Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 278Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 279Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 280Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 281Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 282Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 283Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> <cell> 286Rg <col_header> Isotope </col_header> <col_header> Recent publications </col_header> </cell> </table>
Nine different isotopes of roentgenium have been reported with masses of 272, 274, 278–283, and 286.