<page_title> Astatine </page_title> <section_title> Isotopes </section_title> <table> <cell> 207 <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Mass number </col_header> </cell> <cell> 1.80 h <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Half-life </col_header> <row_header> 207 </row_header> </cell> <cell> 208 <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Mass number </col_header> <col_header> 207 </col_header> </cell> <cell> 1.63 h <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Half-life </col_header> <row_header> 208 </row_header> </cell> <cell> 209 <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Mass number </col_header> <col_header> 207 </col_header> <col_header> 208 </col_header> </cell> <cell> 5.41 h <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Half-life </col_header> <row_header> 209 </row_header> </cell> <cell> 210 <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Mass number </col_header> <col_header> 207 </col_header> <col_header> 208 </col_header> <col_header> 209 </col_header> </cell> <cell> 8.1 h <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Half-life </col_header> <row_header> 210 </row_header> </cell> <cell> 211 <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Mass number </col_header> <col_header> 207 </col_header> <col_header> 208 </col_header> <col_header> 209 </col_header> <col_header> 210 </col_header> </cell> <cell> 7.21 h <col_header> Alpha decay characteristics for sample astatine isotopes </col_header> <col_header> Half-life </col_header> <row_header> 211 </row_header> </cell> </table>
In astatine, the five isotopes 207 to 211 have half-lives exceeding one hour.