Ruthenium is a transition and noble metal with chemical symbol Ru and atomic number 44.
Ruthenium is the first of the platinum group metals. It is very hard and brittle and is commonly used in alloys and as a catalyst. Like with osmium, its tetroxide is very toxic, but ruthenium is less reactive than osmium.
We suggest this element at the purity of 99,99% in a 5 mL glass vial with about 1,5 cm of diameter.
Normally available in 1 day. You can order ruthenium samples below.