Which of the following cannot be represented by resonance structures?

Which of the following cannot be represented by resonance structures?
  1. Dimethyl ether
  2. Nitrate anion
  3. Carboxylate anion
  4. Toluene

Solution

Ethers due to absence of delocalized pair of electrons do not show resonance.

Asked in: JEE Main 2012 (07 May Online)

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