Which choice represents a pair of resonance structures? note that lone pairs have been omitted for clarity. view available hint(s) which choice represents a pair of resonance structures? note that lone pairs have been omitted for clarity.

a. o=c=o and o≡c−o
b. n≡n and br−br
c. n≡c− and n≡c−h
d. o=n−f and n=o−f

A. O=C=O and O≡C−O

Explanation:

Resonance:                                                                                                                

          When the electron distribution on the molecule become uneven like one molecule have more electron compare to other.Resonance occurs due to overlap of the orbitals.When electron flow through pi system then resonance occurs.

So the option A is correct.

A. O=C=O and O≡C−O

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explanation: