Gadolinium (Gd)

Gadolinium is a chemical element with symbol Gd and atomic number 64. It is a silvery-white, malleable and ductile rare-earth metal.

Atomic Number

64

Atomic Mass

157.25 u

Category

lanthanide

Phase

solid

Density

7.9 g/cm³

Electron Shells

2, 8, 18, 25, 9, 2

Atomic Structure

Protons: 64 • Electrons: 64 • Neutrons: Varies by isotope

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f⁷ 5d¹

Discovery

1880 • Jean Charles Galissard de Marignac