Lanthanum: Difference between revisions
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A white, soft element, Lanthanum also belongs to the rare earth metals, and is namesake of the [[lanthanides]], a group of elements in the Periodic Table.<references/> | |||
Revision as of 15:51, 10 May 2010
Lanthanum is a chemical element, having the chemical symbol La.
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Its atomic number (the number of protons) is 57. It has a Standard Atomic Weight of 138.9055(2), and is typically found as a solid in its elemental form.
Lanthanum is considered to be a member of the "Transition metal" class of elements, has a boiling point of 3,464 °C , and a melting point of 918 °C .
A white, soft element, Lanthanum also belongs to the rare earth metals, and is namesake of the lanthanides, a group of elements in the Periodic Table.