Connecting Chemistry


Atomic symbol: Pr
Atomic number: 59
Atomic mass: 140.91

Appearance: Grayish white solid at 25°C

Group: N/a Period: 6
Series: Lanthanides
Block: f
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f³ 6s²

Used in many alloys.

A soft, ductile and malleable metal.

Fun Fact! Praseodymium is named after the Greek words “prasios didymos” meaning “green twin” due to the color of its salts and its close association with didymium.