12. Molecular Shapes & Valence Bond Theory
Hybridization
29PRACTICE PROBLEM
Indigo is an organic compound that is a derivative of indole. Most of the indigo dye produced today is consumed to dye cotton yarn - to make denim and blue jeans. The chemical structure of indigo is given below. Determine the number of unhybridized orbitals on N and C atoms in indigo. [Hint: Due to resonance stabilization/aromaticity N is sp2 hybridized.]
![](https://lightcat-files.s3.amazonaws.com/problem_images/d1add3cc54d3883b-1661272420495.jpg)
Indigo is an organic compound that is a derivative of indole. Most of the indigo dye produced today is consumed to dye cotton yarn - to make denim and blue jeans. The chemical structure of indigo is given below. Determine the number of unhybridized orbitals on N and C atoms in indigo. [Hint: Due to resonance stabilization/aromaticity N is sp2 hybridized.]