Ruthenium is a chemical element
represented by the symbol Ru and has an atomic number of
44. The atomic weight is 101.07. 
Things you might not know about
Ruthenium:
- Ruthenium is exceedingly rare and is the 74th
most abundant metal on Earth.
- A small amount of ruthenium is used to
increase the stability of gold in jewelry.
- The name derives from Ruthenia, the Latin
word for Rus', a historical area which includes present-day western
Russia.
See GC2XAY2 - Hydrogen, for an explanation
about this series of caches.
6 srrg uvtu va gur gerr.