actinides
... that most actinides glow because of their radioactivity ?
... that most <b id="mwAjQ"><a href="./Actinide" id="mwAjU" rel="mw:WikiLink" title="Actinide">actinides</a></b> <a href="./Black_body" id="mwAjY" rel="mw:WikiLink" title="Black body">glow</a> because of their <a href="./Radioactive_decay" id="mwAjc" rel="mw:WikiLink" title="Radioactive decay">radioactivity</a> <i id="mwAjg">(example pictured)</i>?