Violation of the Octet RuleThe Northwestern University's Holmgren Labora
tory defines the octet rule as "A
toms will lose, gain or share electrons
to achieve the electron configuration of the nearest noble gas." With the single exception of helium, which has only two electrons, the number is eight (an octet). Where it can exist, an octet of electrons imparts great stability and lower reactivity. There are instances,
however, in which an octet cannot form, i.e. the octet rule is "violated."
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