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What is nodal plane in organic chemistry? how to identify nodal planes in different molecules ?

What is nodal plane in organic chemistry? how to identify nodal planes in different molecules ?
 

Grade:12th pass

1 Answers

Ravleen Kaur
askIITians Faculty 1452 Points
6 years ago
Hello Student,

As predicted by MOT for a molecule to exist in a state, the nuclei must come close enough and the orbitals must expand so that the electrons now revolve around multiple nuclei. This implies that the orbitals must interact- and they definitely will as some point in space-time. Now orbitals interact only when electrons do(since orbitals have no independent existence). Every electron exists as a wave too. We know what happens when two waves interact, right, interference.


So when two electrons interact, constructive interference and destructive interference occurs. Constructive interference yields bonding orbitals and destructive interference yields anti-bonding orbitals.

When destructive interference occurs, at a given point in space the probability of finding an e- drops to zero.

This point can physically be visualized as the point where electron-electron repulsive interaction exceeds electron-nuclei attractive interaction and the two electrons are pushed apart, never exactly meeting at a point and that is the node.

When we talk about 3D space, all such points come together to form a plane and that is called a nodal plane.

Regards
IHE

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