Hybridization

To determine the number of molecules with at least one sp² hybridized atom, we analyze each molecule:

1. (Benzene): Each carbon is sp² hybridized in the aromatic ring.
2. : The nitrogen is sp² hybridized because it forms a double bond with one oxygen and a single bond with the other.
3. : Boron is sp² hybridized as it forms three bonds and has no lone pairs.
4. All atoms in hydrogen peroxide are sp³ hybridized.
5. Sulfur is sp² hybridized forming two double bonds in the bent structure.
6. (Acetylene): The carbons are sp hybridized due to the triple bond.
7. L-Tryptophan: Contains aromatic rings (indole side chain) where carbon atoms are sp² hybridized.

Analyzing all these molecules, the ones containing at least one sp² hybridized atom are , , , , and L-Tryptophan. This leads to a total of 5 molecules