Lanthanum
From Tardis Wiki, the free Doctor Who reference
Lanthanum was an element on the periodic table with the symbol La and atomic number 57.
The Tenth Doctor described it as a silvery-white metallic element that was malleable, ductile, and oxidised when exposed to air, and could be used as a catalyst. (PROSE: The Bog Warrior [+]Loading...["The Bog Warrior (short story)"])
| ||||||||||||||
