Promethium is a chemical element with
the symbol Pm and it has the atomic number of 61. The
atomic weight is 145.
Things you might not know about
Promethium:
- The name promethium is derived from
Prometheus, the Titan, in Greek mythology, who stole fire from
Mount Olympus and brought it down to mankind.
- Promethium chloride was used for a time as a
major luminous paint for watches after radium was
discontinued.
- Only trace amounts can be found in naturally
occurring ores.
See GC2XAY2 - Hydrogen, for an explanation
about this series of caches.
Ybpngrq va gur pebbx bs gur gerr.