Final answer:
NaCl (sodium chloride) is an example of an ionic compound, where sodium and chloride ions are combined in a stable 1:1 ratio due to the transfer of electrons.
Step-by-step explanation:
An example of an ionic compound among the choices provided is NaCl (sodium chloride), also known as table salt. Ionic compounds are formed by the electrostatic attraction between cations and anions. NaCl consists of sodium cations (Na+) and chloride anions (Cl−), combined in a 1:1 ratio.
This ratio reflects the transfer of electrons, where sodium loses one electron to achieve a stable electron configuration and becomes a cation, while chlorine gains this electron to complete its own octet and becomes an anion. Consequently, NaCl crystallizes into a lattice structure with a face-centered cubic (FCC) unit cell, illustrating the stoichiometry and regular arrangement typical for ionic compounds.