Question

how can a metallic compound be distinguished from an ionic compound? (select all that apply.) when exposed to light, a metallic compound is often lustrous, while an ionic compound is dull. metallic compounds form crystal structures, while ionic compounds are often powders or gases. when hit with a hammer a metallic compound is malleable, while an ionic compound is brittle. solid metallic compounds are not able to conduct electricity, while solid ionic compounds are able to conduct electricity.

Explanation:

Metallic compounds have a sea - of - electrons structure which gives them properties like luster, malleability. Ionic compounds are held by electrostatic forces between ions. They are often brittle and non - lustrous in solid form. Metallic compounds are lustrous when exposed to light, and are malleable when hit with a hammer. Ionic compounds are brittle. Both can form crystal structures, and solid metallic compounds conduct electricity while solid ionic compounds do not (they conduct when molten or in solution).

Answer:

A. When exposed to light, a metallic compound is often lustrous, while an ionic compound is dull.
C. When hit with a hammer a metallic compound is malleable, while an ionic compound is brittle.