59 Pr Praseodymium 140.91 u

Praseodymium

Period
6
Group
—
Block
f-block
Phase (STP)
Solid

Praseodymium is a soft lanthanide that gives glass a distinctive green color. It is used in magnets, lasers, and aircraft engines.

About Praseodymium

Praseodymium (Pr) is a soft, silvery lanthanide, element 59, in period 6 of the f-block. It has an atomic mass of 140.91, the electron configuration [Xe] 4f³ 6s², and a Pauling electronegativity of 1.13. The element imparts a distinctive green color to glass and enamels. Praseodymium also strengthens high-performance permanent magnets, contributes to solid-state lasers, and reinforces the magnesium alloys used in aircraft engines. Solid at standard conditions, it adopts the +3 oxidation state common to the lanthanides and slowly develops an oxide layer in air.

Physical Properties

Atomic Mass 140.91 u
Phase at STP Solid

Electronic Properties

Electronegativity 1.13

Electron Configuration

Configuration [Xe] 4f³ 6s²

Electron Shell Configuration

Praseodymium electron shell configuration Pr 2e⁻ 8e⁻ 18e⁻ 21e⁻ 8e⁻ 2e⁻
Electron shell structure of Praseodymium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 21
5 (O) 8
6 (P) 2

Position in Periodic Table

Praseodymium position in the periodic table Pr

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

More Lanthanide

57 La Lanthanum 58 Ce Cerium 60 Nd Neodymium 61 Pm Promethium 62 Sm Samarium 63 Eu Europium 64 Gd Gadolinium 65 Tb Terbium 66 Dy Dysprosium 67 Ho Holmium

Frequently Asked Questions

What is Praseodymium?
Praseodymium (Pr) is a chemical element with atomic number 59. It is a solid at standard temperature and pressure, classified as a lanthanide.
What are the key properties of Praseodymium?
Praseodymium has an atomic mass of 140.91 u.
What is the electron configuration of Praseodymium?
The electron configuration of Praseodymium is [Xe] 4f3 6s2. It is in the f-block of the periodic table.
What is the electronegativity of Praseodymium?
Praseodymium has an electronegativity of 1.13 on the Pauling scale.