OSMIUM

The osmium is a chemical element of atomic number 76 that is in the group 8 of the periodic table of the elements. His symbol is You. It is a question of a white greyish, fragile and hard metal of transition. It qualifies inside the group of the platinum, and uses in algunasaleaciones with platinum and iridium. It is alloyed in ores of platinum and his tetraóxido, OsO4. It comes of osme, smell. Overdraft in 1804 for Tenant. Of piquant smell it is in use in alloys of great hardness.
It is the metal of major known density.
It uses in organic synthesis (as oxidizer) and in the process of tint of fabrics (for his fixation) for his observation by means of electronic microscopy, and in other biomedical technologies. The alloys of osmium use in electrical contacts, tops of pens and other applications in which a great hardness and permanence is necessary.
Information obtained of http: // www.wikipedia.org/, http: // www.webelements.com/and http: // www.lennetech.es/