Question

how is the crystal lattice of an ionic compound different from the crystal formation of a metallic compound? (select all that apply.) an ionic compound has a rigid crystal structure because of the repulsive forces between the negative ions that are sharing the electrons. a metallic compound forms a crystal structure because the transferred electrons have an attractive force on the negative ions in the metal nuclei. a metallic compound forms a crystal structure because the shared electrons move freely in a lattice of fixed positive ions and exerts an attractive force on the metals nuclei. an ionic compound has a rigid crystal structure with positive and negative ions fixed in placed based on attractive forces.

Explanation:

1. In ionic compounds, positive and negative ions are held together by electrostatic - attractive forces in a rigid lattice. Electrons are transferred from metal to non - metal, not shared between negative ions. So the first option is incorrect.
2. In metallic compounds, there is a sea of delocalized electrons (shared electrons) that move freely among fixed positive metal ions. These electrons exert an attractive force on the metal nuclei, forming a crystal structure. The second option is incorrect as electrons are not transferred in the same sense as in ionic compounds and there are no negative ions in metal nuclei in the context of metallic bonding. The third option is correct.
3. Ionic compounds have a rigid crystal structure due to the strong electrostatic forces between positive and negative ions that are fixed in place based on these attractive forces. The fourth option is correct.

Answer:

C. A metallic compound forms a crystal structure because the shared electrons move freely in a lattice of fixed positive ions and exerts an attractive force on the metal's nuclei.
D. An ionic compound has a rigid crystal structure with positive and negative ions fixed in placed based on attractive forces.