Question

Ionic solids are composed of negative and positive ions in a regular structure (a lattice structure). Strong attractions between the ions of opposite charge hold the solid together. Ionic solids are hard, brittle, and do not conduct electricity. A crystal of NaCl is

1) a covalent solid
2) a metallic solid
3) an ionic solid
4) a molecular solid

Answer 1

Ionic solids are composed of positive and negative ions held together by electrostatic attractions. They are hard, brittle, and do not conduct electricity in their solid state.

Step-by-step explanation:

An ionic solid is a crystalline solid composed of positive and negative ions that are held together by electrostatic attractions. They have a regular lattice structure and are typically hard and brittle. Ionic solids do not conduct electricity in their solid state, but they do conduct when molten or dissolved due to the movement of ions.