Atomic number: 64

Symbol: Gd

Category: lanthanoid metal

Density at 25°C: solid: density: 7.870 g·cm−3 

Gadolinium has only some specialised uses. Mostly in alloys and in medical MRI scanning. It used to be used for old CRT style TVs to provide phosphors and sometimes used in CDs. 

Sample of gadolinium metal. image: adapted from wikipedia

Use, natural applications or common combinations: 

  • Medical MRI's mostly

Basic characteristics:

  • Standard atomic weight: 157.25(3)
  • Melting point:  1312 °C 
  • Boiling point: 3273 °C
  • Radioactivity: most naturally stable