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Q.

Which of the following conditions is not correct for the formation of molecular orbitals by LCAO?

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a

Combining orbitals must have the same or nearly same energy.

b

The combining atomic orbitals must have the same symmetry about the molecular axis.

c

The combining atomic orbitals must overlap partially but to the maximum extent.

d

px atomic orbital can form π-molecular orbital by combining with py atomic orbital.

answer is D.

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Detailed Solution

It is a wrong concept and is not a part of conditions for the formation of molecular orbital by LCAO. Px and Py orbitals cannot combine since they are not on the same axis.
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