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Krypton(氪)
Krypton(Kr) is a colourless noble gas. Hence, it is unreactive. The first compound of Kr found is krypton difluoride. The melting point and boiling point of krypton is -157.36℃ an d-153.22℃ respectively.
For more information, please go to
http://en.wikipedia.org/wiki/Krypton
Xenon(氙)
Xenon(Xe) is a colourless noble gas. Hence, it is unreactive. There are several compounds of Xe found. They are mostly xenon fluorides. For example XeF, XeF2, XeF4, etc. The melting point and boiling point of krypton is -111.7℃ an d-108.12℃ respectively.
For more information, please go to
http://en.wikipedia.org/wiki/Xenon