Back to Elements
    Pr

    Praseodymium

    Lanthanide

    Atomic Number: 59 • Atomic Mass: 140.9100 u • Period: 6 • Group: 101

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f³
    Phase: Solid
    Electronegativity: 1.13
    Cerium (Ce)Neodymium (Nd)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Praseodymium is the chemical element with the symbol Pr and atomic number 59. It belongs to the Lanthanide group and is located in period 6 of the periodic table. It exists as a solid under standard conditions.

    Basic Information

    • Symbol:Pr
    • Atomic Number:59
    • Atomic Mass:140.9100 u
    • Group:101
    • Period:6
    • Category:Lanthanide
    • Phase at STP:Solid
    • Electronegativity:1.13 (Pauling scale)

    Key Facts

    Fun Fact #1

    Name means 'green twin' in Greek

    Fun Fact #2

    Creates yellow color in glass

    Common Uses

    • Aircraft engines
    • Fiber optic cables
    • Permanent magnets