Lanthanum


 * Element Name:** Lanthanum


 * Element Symbol**: La


 * Atomic Mass:** 139[[image:Lanthanum_Joshua.png width="216" height="288" align="right"]]


 * Atomic Number:** 57


 * Protons:** 57


 * Electrons:** 57


 * Discovery (Who & When):** Carl Gustaf Mosander, 1839


 * How It Was Named:** Greek Lanthanein: Means To Lie Hidden


 * State Of Matter:** Solid


 * Melting Point:** 918°C


 * Boiling Point**:1897°C


 * Characteristics:** Its silvery white, soft, hydroger sponge alloys contaning lanthanum reversibly takes 400 times their own volume of hydrgen gas


 * Uses Of Element:** Heat is related therefore it has potential energy


 * Interesting Facts:** cold water attacks lanthanum slowly, and water that is hot attacks it much rapidly, its one of the most reactive of the rare-earth metals

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