ESL Saigon logo

Chemistry


Praseodymium

Name: Praseodymium
Symbol: Pr
Number of Energy Levels: 6
Electrons on the outer energy level: 2
Atomic number: 59
Atomic Mass: 140.90765 Amu (Atomic Mass Units)
Protons/Electrons: 59
Neutrons: 82
Density: 6.77 g/cm3
Classification: Rare Earth

Praseodymium | Chemical elements

Praseodymium was discovered in 1885 by Carl Auer von Welsbach. Its name derives from the Greek words "prasios" which means "green", and "didymos" which means "twin". Praseodymium’s melting point is at 935.0 °C (1208.15 K, 1715.0 °F) and its boiling point is at 3127.0 °C (3400.15 K, 5660.6 °F).

Top 8 interesting facts about Praseodymium

  1. Praseodymium is soft, silvery, malleable, and ductile metal.
  2. Praseodymium is not found freely in nature due to its highly reactive properties.
  3. Praseodymium is stored under mineral oil.
  4. Praseodymium has only one stable isotope, 141-Pr.
  5. Praseodymium is found in small quantities in Earth’s crust in monazite and bastnasite minerals.
  6. Praseodymium is used in high-power magnets production, in a special alloy for high-strength metals for aircraft industry, in studio and projector lights, and in glass industry to create yellow glass.
  7. Praseodymium is not considered to be a toxic metal.
  8. Praseodymium doesn’t have any biological role in living organisms.

Back to index