Gadolinium (Gd)

By Eric Hummel


Gadolinium was first introduced in 1880 in Switzerland. It was discovered by Jean Charles Galissard de Marignac. Named for the mineral gadolinite, which was named after Johan Gadolin, a Finnish chemist.

Uses of Gadolinium

Identification Information

Atomic Number: 64

Mass Number: 157.25

Protons: 64

Neutrons: 93

Electrons: 64

It is located in the upper row of the lower rectangle on the periodic table.


Atomic Mass: 157.25

Atomic Radius: 233pm

Density: 7.901 g/cc

Melting Point: 1313°C (2395°F)

Boiling Point: 3250 °C (5882°F)

At room temperature Gadolinium is a solid.

Appearance: A soft, silvery metal that reacts with oxygen and water

Gadolinium - Periodic Table of Videos


Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.

- Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.