Dysprosium

Atomic symbol: Dy
Atomic number: 66
Atomic mass: 162.5

Appearance: SIlvery 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 4f¹⁰ 6s²

Used in magnets, lighting, and in nuclear control rods.

Relatively reactive and moderately flammable.

Fun Fact! Dysprosium is named after the Greek word “dysprositos” meaning hard to obtain, because of difficulties in isolating this metal.