Explain how VB theory differs from Lewis concept.

1.	Explain how VB theory differs from Lewis concept.
Answer» Solution :(i) According to LEWIS concept, a covalent bond is formed by mutual sharing of electrons whereasaccording to BV theory ,a covalent bond is formed by the overlap of half-filled atomic orbitals containing eletrons with opposite SPIN (ii) VB theory can explain the SHAPES of molecules whereas Lewis conceptcannot (iii) VB theory can explain the STRENGTH of bonds whereas Lewis concept cannot .

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