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.
At normal temperatures, krypton and the other elements in Group 18 are extremely unreactive. The reason is that, with the exception of helium, these elements' outer electron shells are filled to capacity with 8 electrons. This satisfies the octet rule, in which a full electron shell means maximum stability.