Krypton is a noble gas with an atomic number of 36 and a standard atomic weight of 83.79. Other chemical properties of Krypton include a heat of fusion of 1.63 kilojoules per mole.
Krypton's ionization energies are 1,350.8 kilojoules per mole for the first, 2,350.4 kilojoules per mole for the second and 3,565 kilojoules per mole for the third. Other properties of Krypton include its boiling point of minus 244.14 degrees Fahrenheit, melting point of minus 251.27 degrees Fahrenheit, and density of 3.74 grams per liter at standard temperature and pressure conditions. Krypton has eight valence electrons and an atomic radius of 1.03 angstroms.