36Kr
Krypton
Noble GasKrypton (Kr) is element 36, a noble gas, in period 4 and group 18 of the periodic table. Its standard atomic weight is 83.798, it melts at -157.37 °C and boils at -153.22 °C. Discovered by William Ramsay, 1898.
Atomic Number36
SymbolKr
NameKrypton
Atomic Weight83.798 u
CategoryNoble Gas
Period4
Group18
Melting Point-157.37 °C
Boiling Point-153.22 °C
Density0.003478 g/cm³
Electron Config[Ar] 3d10 4s2 4p6
Discovered ByWilliam Ramsay, 1898