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.
Krypton, neon, and xenon are rare atmospheric gases. Each is odorless, colorless, tasteless, nontoxic, monatomic, and chemically inert. All three together constitute less than 0.002 percent of the atmosphere with the approximate concentrations in the atmosphere of 18 ppm for neon, 1.1. ppm for krypton, and 0.09 ppm for xenon.