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.
INTRODUCTION TO THE ILIAD AND THE ODYSSEY Date. These epics are the oldest surviving works of Greek literature. They were composed in the 8th century B.C. (750 B.C. for the Iliad, 720 B.C. for the Odyssey).They took their present form when Greeks learned to write using the N. Phonecian alphabet.Before that, the Greeks communicated it by oral tradition before that.hese epics are the oldest surviving works of Greek literature. They were composed in the 8th century B.C. (750 B.C. for the Iliad, 720 B.C. for the Odyssey). They took their present form when Greeks learned to write using the N. Phonecian alphabet. Before that, the Greeks communicated it by oral tradition before that.