Generally, the more empty the outer electron shell, the more reactive the element. Helium has two(2) electrons, and is thus full, all the other noble elements has eight(8) electrons in it's outer electron shell, so they are also full. *And for everyone's sake, krypton is not green, but colorless, and forms white crystals when solid.
(a) Jubilees was written between 153 B.C. and the year of Hyrcanus' breach with the Pharisees. (1) It was written during the pontificate of the Maccabean family, and not earlier than 155 B.C., when this office was assumed by Jonathan the Maccabee.
Anniversaries and celebrations. 1  Jubilee (biblical) (Hebrew yovel ××××), end of seven cycles of shmita (Sabbatical years) in the Mosaic Law. 2  Jubilee (Christianity), a special year for the remission of sins and universal pardon. 3  Great Jubilee in the year 2000. 4  List of Jubilees of British monarchs.