Radium (Ra, 88) | 🗖 nosplit | ↑ parent "Chemical element" | 77

🗖 nosplit | ⇓ toc | ↑ parent "Chemical element" | Wikipedia | 77

Discovered by Marie Curie when she noticed that there was some yet unknown more radioactive element in their raw samples, after uranium had already been separated.

🔗

Figure 50. The uranium-238 decay chain is the main source of naturally occurring radium. Source.

🔗

Video 109. "The epic story of radium" by Institut de Radioprotection et de Sûreté Nucléaire - IRSN published on 2013-06-06. Source.

🔗