Details : Item 215

Alkali metals
Alkaline earth metal
Transition metals I
Transition metals II
Transition metals III
Transition metals IV
Post-transition metal
Diatomic non-metal
Noble gas

Famille : Transition metals I/2
Symbol : Y, phase: solid, silvery white
Named after the village where it was 1st discovered. The
most important uses of yttrium are LEDs and phosphors.
Exposure to yttrium compounds can cause lung disease.
Atomic number39
Atomic weight88.90584
Melting point (K)1799
Boiling point (K)3203
Speed of sound (m/s)3300
Discovery1794 (J Gadolin)