Gadolinium (Gd)

Gadolinium (Gd)


Atomic Number: 64

Atomic Weight: 157.25

Melting Point: 1586 K (1313°C or 2395°F)

Boiling Point: 3546 K (3273°C or 5923°F)

Density: 7.90 grams per cubic centimeter

Phase at Room Temperature: Solid

Element Classification: Metal

Period Number: 6

Group Number: none

Group Name: Lanthanide


Gadolinium has the highest cross section for the capture of thermal neutrons of any element and this is mainly due to the high cross section of Gd-157 (255,000 barn) and Gd-155 (61,000 barn). Natural Gadolinium is currently used as a burnable poison in nuclear fuel, but the use of Gd-155/157 only has been proposed as this would create an even more effective burnable poison. Gd-152 is used for the production of radioactive Gd-153 which is used for osteoporosis research and bone density measurements. Gd-160 is used in double beta decay research.

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