Source: /cirosantilli/radium
= Radium
{title2=Ra}
{title2=88}
{wiki}
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.
The <uranium 238 decay chain> is the main source of naturally occurring <radium>.
\Video[https://www.youtube.com/watch?v=wAZX8sWSCqs]
{title=The epic story of radium by Institut de Radioprotection et de Sûreté Nucléaire (2013)}