Which among the following concepts is NOT introduced by V. B. Theory?

Which among the following concepts is NOT introduced by V. B. Theory?
  1. Delocalization of electron over the two nuclei.
  2. Shielding effect of electrons.
  3. Partial ionic character of a covalent bond.
  4. Number of lone pair and bonded pair of electrons decide the shape of the molecules.

Solution

VBT says that overlapping of half-filled orbitals results in formation of bond. Formation of bond results in delocalization of $\mathrm{e}^{-}$and form partial ionic character.

Asked in: MHT CET 2022 (06 Aug Shift 1)

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