Q. Resonance structure of a molecule should have:
(1) identical arrangement of atoms
(2) nearly the same energy
(3) the same number of paired electron
(4) identical energy

 1306  179 BHUBHU 2005 Report Error

Solution:

Resonance structure of a molecule should have following features:
(I) Identical arrangement of atoms
(II) Nearly the same energy
(III) The same number of paired or unpaired electrons