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discuss the limitation of ocet rule....

discuss the limitation of ocet rule.

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The limitations of octet rule are
(a) Octet rule is not obeyed by the atoms in the electrond dificient molecule. Ex. `BF_(3)`
(b) Octet rule is not obeyed by lements in and beyond III period of the peridic table
(c) Octet rule is not obeyed by molecules with odd number of electrons Ex : nitric oxide
(d) Octet theory fails to explain the shape and relative stability of the molecules.
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