Praseodymium

[Sarah]

An elementary substance, one of the constituents of didymium; -- so called from the green color of its salts. Symbol Ps. Atomicweight 143.6.

[Tariq Zaki]

The 59th element on the periodic table. The metal belongs to the lanthanides at the bottom of the table. It is almost as soft as aluminum and will slowly corrode in dry or moist air. A [fresh sample] will lose its shine in a week and a small piece will be consumed in a few years if not stored in oil or inert gas. You can wipe off the forming oxide layers to abate [spalling] and further exend the life of the metal. It reacts very slowly with water. [Praseodymium] is rapidly consumed by various acids. The compounds of Praseodymium are yellowish green and are non toxic if insoluble. The metal likes to set on fire if heated The name translates from green twin in greek.

[exinilu]

The chemical element of atomic number 59, a soft silvery-white metal of the lanthanide series.