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Kr - Krypton

The rare gas krypton (and neon, xenon and radon.) was extracted by William Ramsey and M. W. Travers from liquid air in 1898. The name krypton means hidden. Known compounds include a hydrate, deuteride and the difluoride. Superman was reportedly from the doomed planet of Krypton (joke).


Atomic number - 36 Density g/L 3 .74
Atomic weight u 83 .8 Melting point K 115 .78
Bonding radius A 1 .12 Boiling point K 119 .8
Atomic radius A 1 .03 Heat of vaporization kJ/mol 9 .029
Ionization Potential V 13 .999 Heat of fusion kJ/mol 1 .638
Electronegativity - - Specific heat J/gK 0 .248
The oxide is unknown.
Crystal are face centered cubic.

Electron config. : [Ar] 3d10 4s2 4p6

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113
Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

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