https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=SpriteGuard explain xkcd - User contributions [en] 2026-05-15T05:59:26Z User contributions MediaWiki 1.30.0 https://www.explainxkcd.com/wiki/index.php?title=Talk:2975:_Classical_Periodic_Table&diff=349141 Talk:2975: Classical Periodic Table 2024-08-21T18:11:50Z <p>SpriteGuard: </p> <hr /> <div>&lt;!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.--&gt;<br /> <br /> I checked the Actinides and it looks like the criteria for &quot;fire&quot; is half-life &lt; 1 day. [[User:SpriteGuard|SpriteGuard]] ([[User talk:SpriteGuard|talk]]) 18:11, 21 August 2024 (UTC)</div> SpriteGuard https://www.explainxkcd.com/wiki/index.php?title=Talk:2975:_Classical_Periodic_Table&diff=349140 Talk:2975: Classical Periodic Table 2024-08-21T18:11:28Z <p>SpriteGuard: </p> <hr /> <div>&lt;!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.--&gt;<br /> <br /> I checked the Actinides and it looks like the criteria for &quot;fire&quot; is half-life &lt; 1 day.</div> SpriteGuard