Question

A)Draw the three most important contributing structures for the molecule with the formula c4h4o which has no OH bond and one ring of four carbons. Be sure to show all valence shell lone pairs and all charges

B) what is the strongest bond in the molecule in the most important contributing structure

C) what is the total number of this molecule that lie in the same plane

D) what is the ideal HCH bond angle in this molecule

E)Predict whether the actual bond angle will be ideal greater than idea or less than ideal

F) How many hybrid orbitals are in this molecule.

Answer 1

Solution.

The possibe resonance structures of this molecule are

The structure #1 is the major contributor to the resonance hybrid. Structures #3 and #4 are important also.

This molecule is aromatic and cyclic, so all atoms are lying in the same plane, the molecule has an overall structure

In this molecule all the five binding orbitals are sp² hybridized. The strongest are double C=C bonds in the first resonance structure.