Symbol Gd
Atomic Number 64
Atomic Mass 157.25 g.mol-1
Discovered by Jean Charles Galissard de Marignac in 1880

Chemical Properties of Gadolinium

Group Lanthanides  Melting point 1313°C, 2395°F, 1586 K
Period 6 Boiling point 3273°C, 5923°F, 3546 K
Block f Density (g cm−3) 7.90
Atomic number 64 Relative atomic mass 157.25 
State at 20°C Solid Key isotopes 158Gd
Electron configuration [Xe] 4f5d6s2 CAS number 7440-54-2
ChemSpider ID 22418 ChemSpider is a free chemical structure database.

What is Gadolinium?

  • Gadolinium is the 66th element of the periodic table with its symbol being Gd. This is one of the rarely found metals on the earth.

Uses of Gadolinium

  • Gadolinium finds its uses in the field of microwave application and also used in color television sets in the form of phosphorous.
  • The alloys of gadolinium are utilized in the manufacture of magnetic and electronic gadgets such as video recorder, etc.
  • These are highly used in the nuclear power reactors of the nuclear power plants as control rods.
  • The isotope of gadolinium Gd is widely employed in curing tumors and neutron therapy.
  • Gadolinium gallium garnet is used for the imitation of diamonds.
  • The metal is also used for many high-temperature devices as it has good resistivity.

Properties of Gadolinium

  • Gadolinium is a soft, bright, and a silvery metal having both the properties called malleable and ductile.
  • The metal does not react in the presence of oxygen but will get tarnished to a form of white oxide in the presence of moist air which protects it from getting further oxidized.
  • This element is highly soluble in dilute acids and also reacts very slowly with water producing salts which are usually colorless.
  • The element exists in its trivalent state when in compound form.
  • Gadolinium is paramagnetic in nature at the room temperature and is ferromagnetic when cooled or at low temperatures of about 20oc.
  • The Curie point of the metal gadolinium is about 17oc.
  • Gadolinium has around 27 synthetic isotopes and about 13 number of naturally occurring isotopes. The isotope 157 Gd has highest thermal stability as known.
  • About 5.2 parts/million by weight of the earth’s crust is said to be comprised of this element Gadolinium.
  • This metal forms binary compounds when it gets mixed with nitrogen, sulfur, carbon, phosphorus, selenium, boron, silicon, arsenic at higher temperatures.

Certain Facts About Gadolinium

  • Gadolinium is said to be less toxic in nature. Sometimes, the salts of this metal cause eye and skin irritation in few. It does not create any impact on plants or animals.

Practise This Question

For the reaction CO(g)+H2O(g)CO2(g)+H2(g) at a given temperature, the equilibrium amount of CO2(g) can be increased by