Mesomeric effect involves delocalisation of
Show Hint
The mesomeric effect involves the complete transfer or release of \(\pi\) or lone pair of electrons to the adjacent atom or covalent bond.
- pi electrons
- sigma electrons
- protons
- none of these
The Correct Option is A
Solution and Explanation
The mesomeric effect involves the complete transfer or release of \(\pi\) or lone pair of electrons to the adjacent atom or covalent bond. Therefore, it involves the delocalization of pi \((\pi)\) electrons.
Mesomeric effect involves the delocalization of π electrons. Hence option A is correct.
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Concepts Used:
Organic Chemistry – Some Basic Principles and Techniques - Reaction Mechanism
SN1 Reaction Mechanism:
SN1 reaction mechanism takes place by following three steps –
- Formation of carbocation
- Attack of nucleophile
- Deprotonation
SN2 Reaction Mechanism:
The SN2 reaction mechanism involves the nucleophilic substitution reaction of the leaving group (which generally consists of halide groups or other electron-withdrawing groups) with a nucleophile in a given organic compound.
Electrophilic Aromatic Substitution Reaction Mechanism:
The mechanism of an electrophilic aromatic substitution reaction contains three main components which are:
- A new sigma bond from C=C is formed during the reaction in the arene nucleophile.
- Due to the breaking of the C-H sigma bond, a proton is removed.
- The C=C bond is reformed and it restores the aromaticity of the compound.
Electrophilic Substitution Reaction Mechanism:
The electrophilic substitution reaction mechanism is composed of three steps, which will be discussed more below.
- Electrophile Generation
- Carbocation Formation
- Proton Removal