About the accents: This is not a mistake, it is on purpose. Please note that in Spanish some words have accents when asked in a question (I.e que, porque, qui...). Pay attention to the question mark. Most common translations: Fachzeitschrift EselsbrÃ¼cke Erfassung Enklave Eitelkeit Eingeweihte Eck Drittel Dissident Detail
Krypton belongs to the family known as the noble gases. This family also includes helium, neon, argon, xenon and radon. All are considered nonreactive, nonmetallic elements and have eight valence electrons.
Elements and Periodic Table History. In 1898, William Ramsay and Morris Travers at University College London isolated krypton gas by evaporating liquid argon. They had been expecting to find a lighter gas which would fit a niche above argon in the periodic table of the elements.