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.
Frankenstein; or, The Modern Prometheus is a novel written by the English author Mary Wollstonecraft Shelley about the young science student Victor Frankenstein, who creates a grotesque but sentient creature in an unorthodox scientific experiment.helley completed her writing in May 1817, and Frankenstein; or, The Modern Prometheus was first published on 11 March 1818 by the small London publishing house of Lackington, Hughes, Harding, Mavor, & Jones.