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Praseodymium is an element in the periodic table with an atomic number of 59. Its chemical symbol is Pr. This metal is silvery-white and soft. It belongs to the group of rare earth elements and plays an important role in the world of technology. History and Discovery Praseodymium was discovered in 1885 and its name is derived from the Greek word prasios, meaning green, referring to the green color of some of its compounds. Scientists, through their discovery of rare earth elements, have contribu