When and are the wave function of atomic orbitals, then is represented by:

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Solution

Q.
When $ψ_{A}$ and $ψ_{B}$ are the wave function of atomic orbitals, then $σ^{*}$ is represented by: [2024]

1 $ψ_{A} - 2 ψ_{B}$

2 $ψ_{A} + ψ_{B}$

3 $ψ_{A} + 2 ψ_{B}$

4 $ψ_{A} - ψ_{B}$

Ans.
(4)

*Constructive ov**erlap of wavefunctions* $(ψ_{A} + ψ_{B})$ give bonding molecular orbital ( $σ$ or $π$ ) and destructive overlap of wavefunctions $(ψ_{A} - ψ_{B})$ give antibonding molecular orbitals ( $σ^{}$* or $π^{}$ ). Axial overlap of orbitals give $σ$ (or $σ^{}$ ) bond and lateral overlap of orbitals give $π$ (or $π^{*}$ ) bond.

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