- A metallic element - Element - Highly radioactive element - Marie and Pierre’s discovery is cool, if ultimately misguided at first - Metal, symbol Ra - Radioactive element, Ra - Radioactive matter
- Grey metal - Nuclear fuel - Nuclear fuel found in Nauru? I’m confused - Nuclear reactor’s fuel - Radioactive element - Usually radioactive as norm, initially upon merging - Yellowcake product
- Radioactive element - A metallic element found in certain rare minerals, as
thorite, pyrochlore, monazite, etc., and isolated as an infusible gray
metallic powder which burns in the air and forms thoria; -- formerly
called also thorinum. Symbol Th. Atomic weight 232.0.