Praseodymium (Pr) — Lanthanide. Atomic number 59.
Soft silvery metal
- Atomic number: 59
- Symbol: Pr
- Atomic mass: 140.91 u
- Category: Lanthanide
- State: Solid
- Melting point: 934.85 °C / 1208 K
- Boiling point: 3519.85 °C / 3793 K
- Density: 6.77 g/cm³ (20°C)
- Electron configuration: [Xe] 4f3 6s2
- Oxidation states: +3, +4
- Electronegativity: 1.13
- Discovered by: Carl Auer von Welsbach (1885)
Common uses: Magnets, Arc lights, Aircraft engines
Biological role: No known biological role.
Frequently Asked Questions about Praseodymium
What is the atomic number of praseodymium?
Praseodymium has an atomic number of 59, meaning each atom contains 59 protons in its nucleus.
What is the atomic mass of praseodymium?
The standard atomic weight of praseodymium is 140.91 u (unified atomic mass units).
What category does praseodymium belong to?
Praseodymium is classified as a lanthanide.
What is the state of praseodymium at room temperature?
Praseodymium is a solid at 20 °C (68 °F).
What is the melting point of praseodymium?
The melting point of praseodymium is 934.85 °C / 1208 K.
What is the boiling point of praseodymium?
The boiling point of praseodymium is 3519.85 °C / 3793 K.
What is the density of praseodymium?
The density of praseodymium is 6.77 g/cm³ (20°C).
What is the electronegativity of praseodymium?
Praseodymium has a Pauling electronegativity of 1.13.
What is the electron configuration of praseodymium?
The electron configuration of praseodymium is [Xe] 4f3 6s2.
What are the common oxidation states of praseodymium?
Praseodymium commonly exhibits the following oxidation states: +3, +4.
When was praseodymium discovered?
Praseodymium was discovered in 1885 by Carl Auer von Welsbach.
Is praseodymium radioactive?
Praseodymium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of praseodymium?
No known biological role.
What are the common uses of praseodymium?
Praseodymium is used for: Magnets; Arc lights; Aircraft engines.
