YTTRIUM, ZIRCONIUM, NIOBIUM, MOLYBDENUM, RUTHENIUM, RHODIUM YTTRIUM Atomic symbol: Y Atomic weight: 88.90585 Atomic number: 39 Electron configuration: 2-8-18-9-2 Oxidation states: +3 State of matter: solid Heavy metal, brittle Discovered in 1794 by Johan Gadolin Boils at 3337°C, melts at 1529°C Notes: Yttrium is an iron gray, lustrous, and darkens when exposed to light. It is […]