Question

Amongst the molecules given below, the total number of molecules that have at least one sp² hybridized atom is___.
\(C_6H_6, NO_2, BF_3, H_2O_2,SO_2,C_2H_2, L\) -Tryptophan

Answer 1

Correct Answer: 5

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

1. \(C_6H_6\) (Benzene): Each carbon is sp² hybridized in the aromatic ring.
2. \(NO_2\): The nitrogen is sp² hybridized because it forms a double bond with one oxygen and a single bond with the other.
3. \(BF_3\): Boron is sp² hybridized as it forms three bonds and has no lone pairs.
4. \(H_2O_2:\) All atoms in hydrogen peroxide are sp³ hybridized.
5. \(SO_2:\) Sulfur is sp² hybridized forming two double bonds in the bent structure.
6. \(C_2H_2\) (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 \(C_6H_6\), \(NO_2\), \(BF_3\), \(SO_2\), and L-Tryptophan. This leads to a total of 5 molecules