Information

Krypton (Kr) properties


Atomic mass, symbol and atomic number

krypton is a naturally occurring element with the elementary symbol Kr and atomic number 36. In the periodic table it stands with an atomic mass of 83.798 u in the 8th main group. The chemical element discovered by William Ramsay in 1896 is not radioactive and is in a gaseous state at room temperature.

Wanted poster: Krypton

General
Chemical element:krypton
Symbol:Kr
Atomic number:36
Group:Noble gas group
Period:4
Block:p-block
Series:noble gases
Appearance:colorless
explorers:William Ramsay
Year of discovery:1896
Atomic properties
Atomic mass:83,798 u
Atomic radius:???
Covalent radius:116 pm
Van der Waals radius:202 pm
Electron configuration:Ar 3d10 4s2 4p6
ionization:1350.8 kJ / mol
Physical Properties
Physical state:gaseous
Density:???
Crystal structure:cubic
Magnetism:diamagnetic
molar volume:27,99 · 10-6 m3/ mol
Mohs hardness:/
Melting point:-157 ° C
Boiling point:-152 ° C
Heat of fusion:1.64 kJ / mol
Heat of vaporization:9.03 kJ / mol
Thermal conductivity:0.009 W
Chemical properties
electronegativity:3,00

Did you know that ...

  • Krypton is one of the rarest elements of the periodic table?
  • Filling gas in light bulbs made of krypton is?
  • the noble gas krypton can be obtained by the so-called Linde process?
  • Krypton with the exception of fluorine with no other element reacts?