Concept: A coordinate bond (also known as a dative bond) is a type of covalent bond where both shared electrons come from the same atom. This occurs when one atom has a lone pair of electrons and another atom has an empty orbital to accept them.

Why (D) All of these is correct:

• A) ${\mathrm{O}}_3$ (Ozone): In ozone, one oxygen atom forms a double bond with another oxygen atom, and a coordinate bond with the third oxygen atom. The central oxygen atom donates a lone pair to the terminal oxygen atom. The structure can be represented as $\mathrm{O}=\mathrm{O}\leftarrow \mathrm{O}$ or its resonance hybrid.
• B) ${\mathrm{H}}_2{\mathrm{SO}}_4$ (Sulfuric Acid): In sulfuric acid, the central sulfur atom forms two single bonds with two hydroxyl groups (—OH) and two coordinate bonds with two oxygen atoms. The sulfur atom donates lone pairs to the two oxygen atoms. The structure is $\mathrm{O}=\mathrm{S}(=\mathrm{O})(\mathrm{OH}{)}_2$.
• C) ${\mathrm{SO}}_3$ (Sulfur Trioxide): In sulfur trioxide, the central sulfur atom forms three coordinate bonds with three oxygen atoms. The sulfur atom donates lone pairs to each of the three oxygen atoms. The structure is $\mathrm{O}=\mathrm{S}(=\mathrm{O}{)}_2$.

Since all three compounds contain at least one coordinate bond, option (D) is the correct answer.

Correct Answer: (D)