Answer
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Work Step by Step
The indigo molecule has the chemical formula C₁₆H₁₀N₂O₂. It consists of two benzene rings connected by a central double-bonded carbon-nitrogen group.
a. The indigo molecule has 33 σ (sigma) bonds and 9 π (pi) bonds. Single bonds always are σ bonds, while double bonds always consist of 1 σ and 1 π bond; a triple bond always consist of 1 σ and 2 π bonds.
b. The carbon atoms in the benzene rings use sp² hybrid orbitals because all have a trigonal planar arrangement of
electron pairs.
