Final answer:
Ammonium nitrate (NH₄NO₃) is the compound that utilizes both ionic and covalent bonding.
Step-by-step explanation:
The student asked which compound utilizes both ionic and covalent bonding.
The compound that exemplifies this is NH₄NO₃ (ammonium nitrate).
The NH₄+ cation is held together by covalent bonds within the ammonium ion, while the overall compound, including the nitrate ion NO₃⁻, involves ionic bonding between the cation NH₄+ and the anion NO₃⁻.