Radium is a chemical element
with an atomic number of 88, and it represented by the symbol
Ra. It has an atomic weight of 226.
Things you might not know about
Radium:
- Radium is over one million times more
radioactive than the same mass of uranium.
- Radium metal maintains itself at a higher
temperature than its surroundings because of the radiation it
emits.
- Radium was formerly used in self-luminous
paints for watches, nuclear panels, aircraft switches, clocks, and
instrument dials.
See GC2XAY2 -
Hydrogen, for an explanation about this series of
caches.