Symbol Yb
Atomic Number 70
Atomic Mass 173.045
Discovered by Ytterbium was discovered by Jean Charles Galissard de Marignac

Chemical Properties of Ytterbium

Group Lanthanides Melting point 824°C, 1515°F, 1097 K
Period 6 Boiling point 1196°C, 2185°F, 1469 K
Block f Density (g cm−3) 6.90
Atomic number 70 Relative atomic mass 173.045
State at 20°C Solid Key isotopes 172Yb, 173Yb, 174Yb
Electron configuration [Xe] 4f16s2 CAS number 7440-64-4
ChemSpider ID 22428 ChemSpider is a free chemical database

What is Ytterbium?

  • Ytterbium is an element of the periodic table with an atomic number of 70, discovered by Jean de Marignac in the year 1878. The element is named after Ytterby, Sweden.
  • It is a white silvery, soft, ductile and rare earth metal.
  • It is attacked by the strong acids and reacts slowly with cold water and air. The oxide forms a protective layer on the surface when reacted or oxidized in air.
  • Physical properties of Ytterbium differ widely when compared to other elements.
  • Usually, elements will have ferromagnetic and antiferromagnetic properties at low temperatures but it is paramagnetic at a temperature of 0.1 Kelvin.

Uses of Ytterbium

  • Ytterbium clocks are the World’s most stable atomic clock. A large number of atoms present in the element made the clock more stable.
  • It is used as a doping agent to improve the strength, grain refinement and mechanical properties of stainless steel.
  • It also acts as an industrial catalyst.
  • Few alloys of Ytterbium are used in dentistry.
  •  Ytterbium, a silvery white metal is electropositive which reacts with water to form ytterbium hydroxide.
  • Nowadays, this is element is used in the making of memory devices and tunable lasers.

Practise This Question

Which is X, Y and Z respectively ?