MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryGOCResonance or Mesomeric Effect
Which among the following statements are true with respect to electronic displacement in a covalent bond ? (1) Inductive effect operates through pi bond (2) Resonance effect operates through sigma bond (3) Inductive effect operates through sigma bond (4) Resonance effect operates through pi bond. (5) Resonance and inductive effects operate through sigma bond.
A.3 and 4✓ Correct
B.1 and 2
C.2 and 4
D.1 and 3
Explanation
Inductive effect operates through -bond. Inductive Effect refers to the phenomenon wherein a permanent dipole arises in a given molecule due to the unequal sharing of the bonding electrons in the molecule. This effect can arise in sigma bonds Resonance effect operates through -bond. The mesomeric effect can be described as a qualitative approach which elaborates electron withdrawing or releasing properties of substituents present in the molecule. The delocalization of electrons happens between adjacent atoms in a molecule which has a conjugated system that leads to transfer of electrons thr
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